had to put a valve in yet? Noted today that my gun was making a slight air noise. Figured it was just the airline I was hooked to. So I swapped lines, sure enough it was coming from my gun. Within 10 minutes it was doing the "IR Creep", the socket was slowly creeping around on its own. So I pulled it apart to clean the valve a slight bit. Noticed it had a split in it, figured since this was the first one I had apart, that this was normal. So I tried reassembling it a few times and failed. When I finally looked in there and tried to figure out why the heck the little valve rod wouldn't stay straight, I realized the valve was split in half. Called the Matco guy up, hes dropping by with a new valve tomorrow, he knew exactly what the problem was when I said "I took apart my 2135 cause it was creeping". Oh well, still the best impact i've ever used. What issues have you had? My buddy has gone through a set of vanes, but he works on big trucks and uses the hell out of his. My 3/8s gets way more use than my 1/2".