Really happy to hear. Now you know the rings aren't washing that piston head.
It's a comparison between cylinders, if all but one hold fluid for a reasonable amount of time while one drains in 10 mins, as I have seen many times, that's significant.
It's a tool, Rusty, - and of course, like many tools, if you don't know about it, it's of no use to you.
It's your untested opinion, vs my tested one, which was passed on to me, and I have passed on to you and others.
Nothin worse than doing a valve grind on a vehicle, have it come back a few months later running shitty, puffing smoke cuz you didn't know a way to test rings, when a leak down test had leaks everywhere.
A splash of solvent in cyls, a few seconds, while scraping gaskets.
The things you learn from mentors and on the job, - - experience .