Index: branches/tap_branches/psphot/src/psphotMakeResiduals.c
===================================================================
--- branches/tap_branches/psphot/src/psphotMakeResiduals.c	(revision 25900)
+++ branches/tap_branches/psphot/src/psphotMakeResiduals.c	(revision 27838)
@@ -305,4 +305,7 @@
                 if (fabs(resid->Ro->data.F32[oy][ox]) < pixelSN*dRo/sqrt(nKeep)) {
                   resid->mask->data.PM_TYPE_RESID_MASK_DATA[oy][ox] = 1;
+		  resid->Ro->data.F32[oy][ox] = 0.0;
+		  resid->Rx->data.F32[oy][ox] = 0.0;
+		  resid->Ry->data.F32[oy][ox] = 0.0;
                 }
             }