Thanks. Double and triple checked the orientation of the retaining ring. Torqued the retaining nut. As said, I can see the edge of the retaining ring. The rear pinion bearing is all but dead flush into the torque tube housing. They way I understand it, the retaining ring is wedged forward (away) from the carrier, locking the pinion in place by squeezing the front bearing between the lip of the torque tube housing (and shims) and the pinion retaining bolts. I assume this will cause the pinion to move forward slightly. However, it is drawing the pinion gear flush against the the rear pinion bearing. In the midst of knocking it apart to see what I can find.
