WOW ! 38AC !
Welcome back Butch!!!!!!
I was just posting the following when you post appeared.
Here's a quote from Quinn......a former poster here
"The specification for the TRBs calls for 0.005” - 0.010” end play in the crankshaft. Anyone who has replaced front wheel bearings in a car knows how to set them up. You tighten the keeper nut until there is no wobble in the wheel, then continue tightening until you can detect a little drag, then loosen a bit, then tighten again until you feel drag, then loosen . . . then lock it down when it feels just right. However adjustment on these engines is effected by the number of paper shims that are placed between the crankcase and the TRB housing flanges."
Cheers
Hugh