Glad these things are easy to work on. No idea what was going on, must have messed something up. Pulled it apart, honed the cylinder, measured ring gap, all looked perfect same as before, put it together and
https://drive.google.com/file/d/1CPOI12tVzKvZJvx1pEkpWLgSfpBBPmw5/view?usp=sharing...