I have a brand new valve I got from Tuna, I can't get it to stop leaking down the barrel, I've used every spacer in the kit and nothing, with the 215 I managed to wiggle the trigger and it quit and I was able to put 30 to 40 balls thru it and thought I had it finished and put it up. tonight I put the warp feed on it and its leaking down the barrel again. i'm lost.