Constant leakAre you referring to a constant leak or air coming from that area when firing a shot ?
Thanks a Lot !!!If it is leaking out the muzzle end of the barrel then the valve needs to be serviced. If it is near the beginning of the shroud where the chrono connection is then you are probably correct on the reg. Only thing that is really right there. I would pull the barrel and try to more precisely locate the leak.