[JesseK]

Using the CIM mount holes as the holes that hold the whole gearbox together is bugging me for some reason. It seems like things could get very complicated when it comes time to put the gearbox on the drive train, or arm, or wherever else it needs to be mounted. For a generic offseason gearbox, I think that what Tyler has is a great start.

I second the recommendation for making the sideplates identical. Doing so allows for additional flexibility during manufacturing should something go wrong.