jim, Yes, I can see how this works with figures (I had no problems with the zip, BTW). But my problem is slightly different. For example, I have a patio door figure. It has 4 doors which can be opened simultaneously with one ERC dial. 2 of these figures will cross-talk in P4 when using the ERC and I'm looking for a way to stop this. Since the ERC is the master to the Yrot dials on all 4 doors, there's no targetGeom involved. Hmmmm.... just thinking out loud. If I add the 'deltaAddDelta 0' line to the slave channels of the 2nd figure, putting it before my 'deltaAddDelta 180.000000', it might just work. Off to try it. mac