Raimey - I saw the flat spring to which you're referring and thought it might have something to do with the problem. The spring is touching the triggerplate where it looks like the barrel lug would put it when the gun is closed. If I remove the barrels and lift up on the spring, should this "lock" the toplever to the right? I can't see where the spring is attached. Is it attached to the triggerplate, and if so, where? Any special precautions when removing the triggerplate, such as spring loaded parts flying, etc.? Thanks. Bill