Wheel hop in REVERSE?

Ok so here is my latest and greatest. I reversed the shims and no have a 2.7 degree down. Test drove and 100% better but still backing up a slight up grade i get some shudder not quite the thud i had before. So now i have a total of 5.1 between tranny down and rear down. I have a set of 2 degree shims, too much --' more or less to add.

I would go "a little farther down" on the pinion angle. The angle you are looking for actually is the working angle, which is the difference between the two. Mopar never really looked at it that way. They always gave the two angles separately.