Before I make myself look like a complete idiot let me clarify this is my first go at a two stroke. I recently bought a 99 rm125 with a scared cylinder and a fragment welded to the stock piston. I got into it super cheap and sleeved the cylinder and went with a 56 mm wiseco piston. Knowing I would have to remove some material from the power valves for clearance. Here is where the dumb ass moment comes into effect. I dropped the valves in marked them and proceeded to grind them down. Did some final tweaking with the piston in the cylinder to get a perfect fit. Notice I did not say anthing about the valve retention plate. When I reassymbled everything with the plate now in place, my valves have about a 1.5 mm clearance. !!!!!DOOOO!!!! :smirk: Went ahead and finished the reassymbly after checking and finding some people actually run these engines with the power valves locked open or completely removed. Motor runs strong. I don't know what is was like before as I bought the bike already disassembled. So any suggestions as to wich way to go. I am having dificulty finding a set of powervalves. Will running it as set cause any problems other than being a little boggy at low rpm. Thansk for any help Trey.