I received a new Scout Squad and, being impatient, shot it out of the box. It shot great. Then, after taking the gas plug out to clean it and putting it back in (following all directions), the action is short-stroking. Every time I shoot--with all of my magazines, 3 of which are Springfield--no new round is fed into the chamber. When I shoot with one round in the magazine, the bolt does not stay open. I am shooting with the same surplus ammo (German and Portuguese) that I shot with prior to the action not fully cycling.
I have repeated the plug removal-clean-replace cycle several times with no difference. I keep thinking I must have made a rookie mistake, I just don't know what it is. Any thoughts?