massive reconfiguration time again.

Setting up a ring and pinion requires special depth gauges/tools and experience . does your machine shop set up gears?
maybe you can find someone who has the tools and know how to help you for a small fee.
I setup a chevy 12 bolt once, used the blue marking compound and everything looked good, but it wasn't. it whined and growled and ground. needless to say, my friend was out a new set of gears from our learning experience.
I never tried it again. it is worth the 100 at the machine shop.