diff --git a/SimPEG/Maps.py b/SimPEG/Maps.py
index 9a133e0d..40512b2b 100644
--- a/SimPEG/Maps.py
+++ b/SimPEG/Maps.py
@@ -502,12 +502,17 @@ class Mesh2MeshTopo(IdentityMap):
         if self.tree==None:
             self.tree = cKDTree(zip(self.mesh.gridCC[self.actind,0], self.mesh.gridCC[self.actind,1], self.mesh.gridCC[self.actind,2]))
         d, inds = self.tree.query(zip(self.mesh2.gridCC[self.actind2,0],self.mesh2.gridCC[self.actind2,1],self.mesh2.gridCC[self.actind2,2]), k=self.nIterpPts)
-        w = 1./ d**2
-        w = Utils.sdiag(1./np.sum(w, axis=1)) * w
-        I = Utils.mkvc(np.arange(inds.shape[0]).reshape([-1,1]).repeat(6, axis=1))
+        # Not sure consideration of the volume ...
+        # vol = np.zeros((self.actind2.sum(), self.nIterpPts))
+        # for i in range(self.nIterpPts):
+        #     vol[:,i] = self.mesh.vol[inds[:,i]]
+        w = 1. / d**2
+        w = Utils.sdiag(1./np.sum(w, axis=1)) * (w)
+        I = Utils.mkvc(np.arange(inds.shape[0]).reshape([-1,1]).repeat(self.nIterpPts, axis=1))
         J = Utils.mkvc(inds)
         P = sp.coo_matrix( (Utils.mkvc(w),(I, J)), shape=(inds.shape[0], (self.actind).sum()) )
-        self.P = P.tocsc() 
+        # self.P = Utils.sdiag(self.mesh2.vol[self.actind2])*P.tocsc()
+        self.P = P.tocsc()
 
     @property
     def shape(self):
diff --git a/SimPEG/Problem.py b/SimPEG/Problem.py
index 7a738cf2..201ff56c 100644
--- a/SimPEG/Problem.py
+++ b/SimPEG/Problem.py
@@ -320,10 +320,12 @@ class GlobalProblem(BaseProblem):
 
         subMesh = self.meshes[ind]
         # subMap  = Maps.IdentityMap(subMesh) # this is probably a mesh2mesh mapping?
+        # subMap  = self.getSubMap(subMesh, ind)
 
         if self.PropMap is None:
             prob = self.SubProblem(subMesh, mapping=subMap * self.mapping, **self.probKwargs)
         else:
+            # This will not work with a fancier propmap...
             prob = self.SubProblem(subMesh, mapping=subMap * self._propMapMapping, **self.probKwargs)
 
         survey = self.survey.__class__(srcList=self.survey.srcList[self.groups[ind]], **self.surveyKwargs)
@@ -331,6 +333,18 @@ class GlobalProblem(BaseProblem):
 
         return prob, survey
 
+    # Not sure we need this here ... 
+
+    # def getSubMap(self, subMesh, ind):
+    #     """The sub"""
+    #     mesh2mesh = Maps.IdentityMap(subMesh) # this is probably a mesh2mesh mapping?
+
+    #     if self.PropMap is None:
+    #         subMap = mesh2mesh * self.mapping
+    #     else:
+    #         subMap = mesh2mesh * self._propMapMapping
+
+    #     return subMap
 
 if __name__ == '__main__':