Index: trunk/psastro/src/psastroFixChips.c
===================================================================
--- trunk/psastro/src/psastroFixChips.c	(revision 39926)
+++ trunk/psastro/src/psastroFixChips.c	(revision 41536)
@@ -307,5 +307,6 @@
         obsChip->toFPA   = toFPA;
 	// NOTE: when we call psPlaneTransformInvert here, we do not increase the order as in other places
-        obsChip->fromFPA = psPlaneTransformInvert(NULL, obsChip->toFPA, *region, 50);
+	// WHY NOT?
+        obsChip->fromFPA = psPlaneTransformInvert(NULL, obsChip->toFPA, *region, 50, 0);
         psFree (region);