Pile of issues there.
Looking at them all, including the pointy pins --
-the chambers look to have been 'touched up'
-the striker discs don't meet their 'timing marks'
-headspace if FUBAR
I wonder if those pins are replacements that someone put in there to deal with inconsistent ignition -- which could have been brought on by the 'chamber work' that someone had done (screwed up)... the chamber work being what caused the headspace issue...
Can't tell all from the photos and story, here's to thinking on it.
--Tinker
