mudroc

I built a new short gun top end for my STI 5" Open gun shortned STI slide KKM 4 1/4 Bull Barrel Bedell comp All other required parts Gun functions ok, with the problems - 50 rounds function fire 4-5 stove pipes & extreme galling of upper lugs of slide Tried 9-10-11 # recoil springs 3N38 -4756 - silouette -125 zero JHP All produced same problems NEED HELP