Anybody else have a crunchy firing button on the Infinite Stingray? If so, any suggestions on how to remedy? Also the bottom portion of the button has a slight rattle, as if the parts aren't fitting snugly together inside the switch. That's my theory anyway. I've taken the switch completely apart, soaked in iso alcohol, and thoroughly cleaned everything with a toothbrush, but that didn't help. I love the mod, it works fine, and never really misfires. But that crunchiness is annoying.