Originally Posted by S_Constitutionist
I tried again by centering the pivot between the agate covers (y axis, looking down) thinking that perhaps it was binding on one of the covers. This worked a few times, but again inconsistency reared its ugly head.
That's a clue. I don't know what it means, but it is definitely a major clue.
Take that information to RCBS. Their Customer Service will serve you well.