CatBoater I wish you luck! But, if you get the second valve and you are still having issues.......it isn't the valve. As Ceeray said that it could be an internal leakage of the cylinder O-rings. Since the valve releases the pressure on the "opposite" side of the pressure, an internal cylinder leak is more difficult to find. Especially if you have one of the Chinese brands or even Robart, because their precession isn't as close as the higher end jet retracts. Good Luck!