After I reassembled the bolt, all was good, BUT I noticed one case was left in the chamber, with the rim torn off - last round of the day.

Dan at Czechpoint got right back with me when I asked, and I figured it out - when I put the itty bitty plug back between the extractor spring and the extractor, I missed the spring hole, and it was riding on the spring itself, causing extreme compression and extra force on the extractor. When I tore it down and reassembled it, (I HATE tiny parts!), I function tested with empty brass, and everything seems to be working normally. I can't function test until my first weekend - retirement is over, back to work.
