Index: trunk/psModules/src/objects/pmModelUtils.c
===================================================================
--- trunk/psModules/src/objects/pmModelUtils.c	(revision 31153)
+++ trunk/psModules/src/objects/pmModelUtils.c	(revision 32347)
@@ -122,4 +122,9 @@
     if (!isfinite(axes.theta)) return false;
 
+    // Mxx, Mxy, Myy define the elliptical shape, but Mrf defines the width 
+    float scale = (isfinite(moments->Mrf) && (moments->Mrf > 0.0)) ? moments->Mrf / axes.major : 1.0;
+    axes.major *= scale;
+    axes.minor *= scale;
+
     psEllipseShape shape = psEllipseAxesToShape (axes);