Since the new slide stop didn't fix the problem I have with the slide releasing when it's pulled back from a locked position I called their Custom Shop again. The guy I talked to said they recommend using the slide release button as opposed to the slingshot method. Said it was less stress on the aluminum frame. ???? Maybe it was because mine doesn't work that way, or maybe it's just his preference. He also said to put 500 rounds through it and see how it is then.