I've got a fullsize 9mm USP V1 and I was curious if I can somehow switch the orientation of the safety, meaning, instead of UP being safe and DOWN is fire, UP is fire and DOWN is safe. The reason I ask is I'm having a hell of a time trying to trip the slide release with the safety off because it gets in the way of my thumb. I essentially have to reposition my palm, and lose my shooting grip just to hit it. If I have the safety up though, the selector is out of my way and life is good.