it is not a stud problem in my opinion.

I think the bearing shoulder on my new axle is machined incorrectly and off at least a quarter inch if not more. This crap only happens to me

I stood my old axle and the new one next to each other and you can with your eye (even my bad eyes) that they are clearly different and causing the hub to sit to far inboard.

Those are the new studs I got from Ames when I got the axle And bearing kit