Rear end location wrong? IM STUMPED!!!

That's factory tolerance.
But, here's a hint.
>If you have an 8.75 rear end, then the axle end-play adjuster is supposed to be, on the passenger side. Have a look. Maybe yours is on the driver's side. The adjuster can be as much 3/8ths off-set, which is doubled when moved from side to side.I moved mine to the other side, which got it nearly centered.
>Also, pop the wheels off and measure the exct backspace of each, maybe you can get some change there. On my 10" Rally wheels, I had to cut the spider out of one of them, and move it over a hair, to get the sidewall off the fender lip.
>And finally, if the quarters on your car, are not original, some guys will just install the new patch-panel, OVER the old one, and there it is, lol.

Altho your story is somewhat unique.
This won't help with the green bearings, but I had a similar problem and there is nothing to say you can't put adjusters on both sides. That allows you to move both axles as a set by taking slack on the side where you have more clearance and then adjusting the other side in to give you more clearance. You can literally center the axles between the lips. You just have to make the end play correct at the end of the process.