hi guys - help required
rap5 gen2. rap4 pressure gauge. When gauge is fitted it shows 5.6, and no amount of moving the velocity screw will change this, in any direction. Check reading, pull trigger and gauge zeros then immediately returns to 5.6 and holds. No amount of moving velocity screw in any direction will change this
solutions tried
changed all core o-rings including velocity chamber
tried different gas tubes
everything lubed as it should be
any ideas?
