After I get the ring compressor loosely around the piston, everything goes for an oil bath while I install the rod bearing:
I sleeved a piece of 5/16" fuel line over the bare threads and dropped the piston into place:
My friend Craig let me use his ring compressor. He said it was his grandfather's from back in the 50's. It's way better than the cheapo POS that I bought last week. I wish they made tools as good as this these days.
This is Craig's Gramps from back in the day. He's second from the left.
A little lube on the bearing, and in she goes.