One clue is your callout of a Torsen differential. I wasn't aware that there were ANY Torsen differentials made for the 8 3/4.
There are TrueTrac gear-type differentials available now. It is possible that whatever differential you do have in there is pushing sideways against the bearing. Maybe the axles are too long?

I seems the axle being too long and loading one side bearing axially is more likely than problems arising from a bent hou

I'd suggest getting together with DoctorDiff or another knowledgable rear end person to diagnose your problem.

R.