My base pin showed today. Dropped right in. No more wiggle on the rear of the cylinder. With C45S loads I was still rubbing occasionally at the rear of the cylinder window, ten o clock ish. Hit it with a fine flat file, 180 and 220 grit paper. Tried some 45acp too. Seems to be 100% now. But I’m going to have to tinker with the head of the base pin. Its too big [and ugly] on my short bbl birdshead, can’t remove the cylinder or eject brass. I might try shooting it at this weekends match and next week cut it back like the original base pin is made.