Leaking down barrel

[ImpAct]

I gassed up my timmy to set my LPR, when i started turing the LPR screw all the sudden air started gushing out of the barrel the gauge was reading 100+ psi. I de-gassed the gun and tried to start over againg...now even with the LPR screw turned all the way in the gauge wont go any higher than 40 psi.

What could be the problem?

[zikatz]

there is a small scew towards the bottem of your expansion chamber u need to turn that one (its a smaller alan rench size)