[P.S.]

Went to a seminar at a club north of me when I wanted to remove a non-Mitchell overdrive and go back to stock. That meant pulling the pinion carrier out of the banjo to remove the stub shaft and replace with a full length drive shaft (and stock torque tube, etc.). The guy who 'pressed' the pinion carrier back into the banjo did it wrong and it was a little crooked. The rear end whined (and occasionally growled) for 50 miles all the way home. I pulled the rear end and did it again. With the pinion carrier perfectly straight, no more problems.