xvalve leak

[vintage]

back the velocity ajustment out and see if it stops

[Boobie817]

I have a leak that i can't fix. This is a reverse xvalve with a lvl x bolt and ULT. First i replaced every O-ring in this gun. It has a new reg piston since i mangled the original trying to open it. It leaks from the vent hole in the back section of the valve. Regardless of the pressure or if im holding the trigger it leaks. I cleaned it out, replaced all the orings and the reg piston and lubed it up. I can't figure out the leak. Any help is appreciated. Thanks

https://youtu.be/rX-Q_JHsU7c