I feel like an idiot for asking this- it seems to me it should be straightforward, but I usually end up guessing and get it wrong most of the time...

I have two Chauvet 255 IRC moving heads set up in Master/Slave mode. I want them to act like exact mirror opposites of each other. I would think facing them both in the same direction (display panel 90 degrees to the right of audience) then setting the Pan on the Slave to Reverse while all other P/T are Normal would do it, but this is not always the case. The setting also has to do with the Pan Angle Range (180/360/540) and the Tilt Range (90/180/270).
So, for the various configurations:
Mounting: Upright/Upside Down
Physical orientation: Displays facing inward, outward, both to left, both to right
Pan Angle: 180/360/540
Tilt Angle: 90/180/270
What should the Pan/Tilt reverse settings be to obtain exact mirror operation?
Bonus points if you can tell me what they should be for the Chauvet 255 specific Totem mode.
