diff --git a/src/meshTools/Make/files b/src/meshTools/Make/files
index 1b3dffa89d..d159b0df0b 100644
--- a/src/meshTools/Make/files
+++ b/src/meshTools/Make/files
@@ -41,7 +41,7 @@ $(pWave)/pointEdgePoint.C
 patchWave = $(algorithms)/PatchEdgeFaceWave
 $(patchWave)/PatchEdgeFaceWaveName.C
 $(patchWave)/patchEdgeFaceInfo.C
-$(patchWave)/patchDist.C
+$(patchWave)/patchPatchDist.C
 
 meshWave = $(algorithms)/MeshWave
 $(meshWave)/MeshWaveName.C
diff --git a/src/meshTools/algorithms/PatchEdgeFaceWave/patchDist.C b/src/meshTools/algorithms/PatchEdgeFaceWave/patchPatchDist.C
similarity index 94%
rename from src/meshTools/algorithms/PatchEdgeFaceWave/patchDist.C
rename to src/meshTools/algorithms/PatchEdgeFaceWave/patchPatchDist.C
index 22ea9a35f1..6dc94b6c53 100644
--- a/src/meshTools/algorithms/PatchEdgeFaceWave/patchDist.C
+++ b/src/meshTools/algorithms/PatchEdgeFaceWave/patchPatchDist.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -23,7 +23,7 @@ License
 
 \*---------------------------------------------------------------------------*/
 
-#include "patchDist.H"
+#include "patchPatchDist.H"
 #include "PatchEdgeFaceWave.H"
 #include "syncTools.H"
 #include "polyMesh.H"
@@ -31,7 +31,7 @@ License
 
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
-Foam::patchDist::patchDist
+Foam::patchPatchDist::patchPatchDist
 (
     const polyPatch& patch,
     const labelHashSet& nbrPatchIDs
@@ -41,19 +41,19 @@ Foam::patchDist::patchDist
     nbrPatchIDs_(nbrPatchIDs),
     nUnset_(0)
 {
-    patchDist::correct();
+    patchPatchDist::correct();
 }
 
 
 // * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //
 
-Foam::patchDist::~patchDist()
+Foam::patchPatchDist::~patchPatchDist()
 {}
 
 
 // * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
-void Foam::patchDist::correct()
+void Foam::patchPatchDist::correct()
 {
     // Mark all edge connected to a nbrPatch.
     label nBnd = 0;
diff --git a/src/meshTools/algorithms/PatchEdgeFaceWave/patchDist.H b/src/meshTools/algorithms/PatchEdgeFaceWave/patchPatchDist.H
similarity index 86%
rename from src/meshTools/algorithms/PatchEdgeFaceWave/patchDist.H
rename to src/meshTools/algorithms/PatchEdgeFaceWave/patchPatchDist.H
index 11cf2f4825..4d669bbb45 100644
--- a/src/meshTools/algorithms/PatchEdgeFaceWave/patchDist.H
+++ b/src/meshTools/algorithms/PatchEdgeFaceWave/patchPatchDist.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -22,19 +22,19 @@ License
     along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
 Class
-    Foam::patchDist
+    Foam::patchPatchDist
 
 Description
-    Like wallDist but calculates on patch distance to nearest neighbouring
+    Like wallDist but calculates on a patch the distance to nearest neighbouring
     patches. Uses PatchEdgeFaceWave to do actual calculation.
 
 SourceFiles
-    patchDist.C
+    patchPatchDist.C
 
 \*---------------------------------------------------------------------------*/
 
-#ifndef patchDist_H
-#define patchDist_H
+#ifndef patchPatchDist_H
+#define patchPatchDist_H
 
 #include "scalarField.H"
 #include "HashSet.H"
@@ -48,10 +48,10 @@ namespace Foam
 class polyPatch;
 
 /*---------------------------------------------------------------------------*\
-                           Class patchDist Declaration
+                         Class patchPatchDist Declaration
 \*---------------------------------------------------------------------------*/
 
-class patchDist
+class patchPatchDist
 :
     public scalarField
 {
@@ -75,7 +75,7 @@ public:
     // Constructors
 
         //- Construct from patch and neighbour patches.
-        patchDist
+        patchPatchDist
         (
             const polyPatch& pp,
             const labelHashSet& nbrPatchIDs
@@ -83,7 +83,7 @@ public:
 
 
     //- Destructor
-    virtual ~patchDist();
+    virtual ~patchPatchDist();
 
 
     // Member Functions
diff --git a/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.C b/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.C
index 0ef785383b..db337fc098 100644
--- a/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.C
+++ b/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.C
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -523,6 +523,75 @@ void Foam::PointEdgeWave<Type, TrackingData>::handleCyclicPatches()
 }
 
 
+// Propagate information from edge to point. Return number of points changed.
+template <class Type, class TrackingData>
+Foam::label Foam::PointEdgeWave<Type, TrackingData>::handleCollocatedPoints()
+{
+    // Transfer onto coupled patch
+    const globalMeshData& gmd = mesh_.globalData();
+    const indirectPrimitivePatch& cpp = gmd.coupledPatch();
+    const labelList& meshPoints = cpp.meshPoints();
+
+    const mapDistribute& slavesMap = gmd.globalPointSlavesMap();
+    const labelListList& slaves = gmd.globalPointSlaves();
+
+    List<Type> elems(slavesMap.constructSize());
+    forAll(meshPoints, pointI)
+    {
+        elems[pointI] = allPointInfo_[meshPoints[pointI]];
+    }
+
+    // Reset changed points counter.
+    nChangedPoints_ = 0;
+
+    // Pull slave data onto master. No need to update transformed slots.
+    slavesMap.distribute(elems, false);
+
+    // Combine master data with slave data
+    forAll(slaves, pointI)
+    {
+        Type& elem = elems[pointI];
+
+        const labelList& slavePoints = slaves[pointI];
+
+        label meshPointI = meshPoints[pointI];
+
+        // Combine master with untransformed slave data
+        forAll(slavePoints, j)
+        {
+            updatePoint
+            (
+                meshPointI,
+                elems[slavePoints[j]],
+                elem
+            );
+        }
+
+        // Copy result back to slave slots
+        forAll(slavePoints, j)
+        {
+            elems[slavePoints[j]] = elem;
+        }
+    }
+
+    // Push slave-slot data back to slaves
+    slavesMap.reverseDistribute(elems.size(), elems, false);
+
+    // Extract back onto mesh
+    forAll(meshPoints, pointI)
+    {
+        allPointInfo_[meshPoints[pointI]] = elems[pointI];
+    }
+
+    // Sum nChangedPoints over all procs
+    label totNChanged = nChangedPoints_;
+
+    reduce(totNChanged, sumOp<label>());
+
+    return totNChanged;
+}
+
+
 // * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
 // Iterate, propagating changedPointsInfo across mesh, until no change (or
@@ -863,44 +932,58 @@ Foam::label Foam::PointEdgeWave<Type, TrackingData>::iterate
 
     while (iter < maxIter)
     {
-        if (debug)
+        while (iter < maxIter)
         {
-            Pout<< "Iteration " << iter << endl;
+            if (debug)
+            {
+                Pout<< "Iteration " << iter << endl;
+            }
+
+            label nEdges = pointToEdge();
+
+            if (debug)
+            {
+                Pout<< "Total changed edges       : " << nEdges << endl;
+            }
+
+            if (nEdges == 0)
+            {
+                break;
+            }
+
+            label nPoints = edgeToPoint();
+
+            if (debug)
+            {
+                Pout<< "Total changed points      : " << nPoints << nl
+                    << "Total evaluations         : " << nEvals_ << nl
+                    << "Remaining unvisited points: " << nUnvisitedPoints_ << nl
+                    << "Remaining unvisited edges : " << nUnvisitedEdges_ << nl
+                    << endl;
+            }
+
+            if (nPoints == 0)
+            {
+                break;
+            }
+
+            iter++;
         }
 
-        label nEdges = pointToEdge();
 
+        // Enforce collocated points are exactly equal. This might still mean
+        // non-collocated points are not equal though. WIP.
+        label nPoints = handleCollocatedPoints();
         if (debug)
         {
-            Pout<< "Total changed edges       : " << nEdges << endl;
-        }
-
-        if (nEdges == 0)
-        {
-            break;
-        }
-
-        label nPoints = edgeToPoint();
-
-        if (debug)
-        {
-            Pout<< "Total changed points      : " << nPoints << endl;
-
-            Pout<< "Total evaluations         : " << nEvals_ << endl;
-
-            Pout<< "Remaining unvisited points: " << nUnvisitedPoints_ << endl;
-
-            Pout<< "Remaining unvisited edges : " << nUnvisitedEdges_ << endl;
-
-            Pout<< endl;
+            Pout<< "Collocated point sync     : " << nPoints << nl
+                << endl;
         }
 
         if (nPoints == 0)
         {
             break;
         }
-
-        iter++;
     }
 
     return iter;
diff --git a/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.H b/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.H
index 1a8d82e5f6..440e903676 100644
--- a/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.H
+++ b/src/meshTools/algorithms/PointEdgeWave/PointEdgeWave.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011-2012 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -205,6 +205,9 @@ class PointEdgeWave
             //- Merge data from across cyclic boundaries
             void handleCyclicPatches();
 
+            //- Explicitly sync all collocated points
+            label handleCollocatedPoints();
+
 
         //- Disallow default bitwise copy construct
         PointEdgeWave(const PointEdgeWave&);
diff --git a/src/meshTools/algorithms/PointEdgeWave/pointEdgePointI.H b/src/meshTools/algorithms/PointEdgeWave/pointEdgePointI.H
index 370db9fb85..3510e810a4 100644
--- a/src/meshTools/algorithms/PointEdgeWave/pointEdgePointI.H
+++ b/src/meshTools/algorithms/PointEdgeWave/pointEdgePointI.H
@@ -2,7 +2,7 @@
   =========                 |
   \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
    \\    /   O peration     |
-    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
+    \\  /    A nd           | Copyright (C) 2011-2013 OpenFOAM Foundation
      \\/     M anipulation  |
 -------------------------------------------------------------------------------
 License
@@ -59,8 +59,63 @@ inline bool Foam::pointEdgePoint::update
 
     if ((diff < SMALL) || ((distSqr_ > SMALL) && (diff/distSqr_ < tol)))
     {
-        // don't propagate small changes
-        return false;
+        // don't propagate small changes unless origins differ
+        scalar originDiff2 = magSqr(origin_-w2.origin());
+        if
+        (
+            originDiff2 < SMALL
+         || ((distSqr_ > SMALL) && (originDiff2/distSqr_ < tol))
+        )
+        {
+            return false;
+        }
+        else
+        {
+            // Different origin. Choose lexical ordering.
+            bool w2less = false;
+            for (direction cmp = 0; cmp < vector::nComponents; cmp++)
+            {
+                scalar d = w2.origin()[cmp]-origin_[cmp];
+                scalar magD = mag(d);
+
+                if
+                (
+                    magD < SMALL
+                 || ((distSqr_ > SMALL) && (magD/distSqr_ > tol))
+                )
+                {
+                    // Small difference. Test next component.
+                }
+                else if (d < 0)
+                {
+                    w2less = true;
+                    break;
+                }
+                else if (d > 0)
+                {
+                    break;
+                }
+            }
+
+            if (w2less)
+            {
+                // update with new values
+                distSqr_ = dist2;
+                origin_ = w2.origin();
+                return true;
+            }
+            else
+            {
+                Pout<< "** same distance. at:" << pt << nl
+                    << "    old distance:" << Foam::sqr(distSqr_) << nl
+                    << "    new distance:" << Foam::sqr(dist2) << nl
+                    << "    old origin:" << origin_ << nl
+                    << "    new origin:" << w2.origin() << nl
+                    << endl;
+                Pout<< "** w2 looses." << endl;
+                return false;
+            }
+        }
     }
     else
     {