Just got back from testing the adjustable buffer and it’s definitely an improvement. Started off with the short stroke bumper in it, ran 100% but muzzle rise was noticeable. Removed short stroke and it seems to run flatter, feeling confident for this weekends classifier match. Ran out of time to try removing spring spacer but since I am still running 115Factory ammo not sure if that would be a good idea.
Tim: Thanks for making it right and overnighting the internal spring.