Hello, i got a surefire G2 for my girlfriend for x-mas and the tailcap seem to be broken. the button is not springy like my M2 tailcap and sometimes remains on by itself when you take your finger off the button no matter how far i unscrew the tailcap. and it takes very little force to turn the light on and it keeps going on by itself in her pocket, which is a good way to eat up expensive batteries. I e-mailed surefire but have yet to recieve a response, anyhting i should try? i tried to put my M2 tailcap on to test but it doesnt seem to fit.