Okay, i traced the problem to the front of the gat for certain. On the manifold, where the 3 LP hoses are. The one for the rear part of the ram has a large amount of air coming through (with the ram disconnected), but when i try to fire the gun, no air goes to the front hose to re-cock it.
My personal thoughts are that the front barb (i think thats what its called, the LP hose fitting) could have grit or something in it?
Anyone think it's possible/likely?