Is there a way to calibrate and update a fixtures FPE without having the fixtures position/orientation change in A3D

The current FPE calibration method makes sense to me from touring workflow, I've moved to a different venue and not all the lights got rehung exactly where they were in the previous venue, so I can update the FPE Focus Palettes and Recalculate FPE, and now A3D reflects more accurately how fixtures are actually hung in this venue. 

What I'm a little confused on is updating FPE focus points to calibrate and compensate for fixture belt backlash. For example after load-in I record FPE Focus Palettes and Recalculate FPE, so my A3D matches how the rig actually got hung. Now a few days later because of belt backlash in the moving lights, they no longer perfectly hit the FPE Focus Points when sent to the corresponding Focus Palette, but the fixtures themselves haven't moved in position or orientation. 

There's no way to update the FPE Focus Palettes and Recalculate FPE to calibrate the fixtures, without changing their position and orientation is there? I want the fixtures calibrated so when I type an XYZ position of 0'0'5' my fixtures precisely go there, but I don't want their position and orientation to change each time as that isn't actually changing, what's changed is how they respond to Pan and Tilt values because of the belt backlash and imperfect homing

Thanks,

Steven

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