8 3/4 gear setup

Are you applying resistance to the ring gear when you are testing the drive side?

Yes.

Figured out a couple things.
The guy I was working with was saying to add shims and I listened to him.
He had the pumpkin upside down in the holder which was backward to me.
Finally I removed shims and turned it right side up and things started to go correctly.
Figured the suregrip hitting the pinion
must have been the .09 shim pac and maybe the carrier races were cocked.