After doing the vacuum shift motor fix, I had a horrible vibration. At highway speeds it was shaking the mirrors so bad that I couldn't see out of them!
I'm guessing that it is the front DS out of balance or the universal joints on thier way out. I pulled out the nylon spacer and lubed up the actuator real good and reassembled. Now everything is back to working like it should.
I think that I will install a homemade Posi Loc in the near future.