JakeExtrema

@Nolan thanks a ton! I was able to make the same mods to the valve puller. Instead of drilling and tapping I just put a 15mm socket over the square end. I also made a socket to pull the retaining nut my gun. this was for my a400 extreme unico, but the gassing is very similar to the 391s the entire reason I removed this nut was my spring is not seating properly, but when I removed the nut, the spring seats fine so it’s not bent. I flipped the spring and it flared out less tan the picture. Gun has ran fine even with the spring acting odd. New springs are out of stock. Oh well