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.
My machine shop mostly does motor stuff and haven't asked them. I take all my stuff to a differential place that specializes in it and they charge about 175 if I just bring it in and hand it to them. I had that option when I first put it together and I had them set up the four tens with the new spool. I really wasn't looking to take the whole rear end out but I guess if I left it on the Springs it wouldn't be so bad I'd have to take all that stuff off anyways.