After all that time and work...

A pal had a vibration & I took the driveline out so she could take it to a NAPA service center for balancing. Turned out it was WAY out of balance, they added a lot of weights.

Re-installed, the vibration was worse!

So I took a steel strait edge & checked it over real good.

It was bent.

She had another shop make a new one & smooth as silk after that.