I am having major problems with my XValve and LVL X. I have tried just about every possible carrier and shim possibility and still no good results. My best results is with the .5 carrier and 2 shims and the stock spring. I can pressure it up and no leaks down the barrel, I pull the trigger and it fires upon pulling and releasing of full auto if you hold the trigger. I can add more shims but it does the same thing. I can go up to the 1.0 carrier and my bolt will not stay pushed back and it constanly leaks down the barrel. I can turn my velocity all the way down and turn it back up slowly and it leaks down the barrel before it engages the on/off. I tried my brothers lvl 10 with the exact same setup that he has on his xvalve on my valve and and it constanly leaks down the barrel. We put his back together and tried it with my bolt and stock spring and it worked fine. I can try a harder spring but I have to turn the velocity all the way up and it still goes full auto. I tried my valve in his gun thinking it might be my sear but it did the same thing. I tried putting a level seven bolt and powertube spacer off of my pneumag and it just constantly leaked down the barrel. Put it back on my pneumag and it worked fine. Is there a possibility that something is wrong with the valve itself.
Any help is appreciated.
Jeremy Calcote
Any help is appreciated.
Jeremy Calcote

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