ok i got a x-valve the other day and threw it in my gun, it shot great. so i ordered a cocker barrel adapter from doc and put it in my gun. first off it was a pain in the arse to put it. i did it just as the instructions said but had to force it in there. now when i air up my gun the bolt sticks and air rushes out down the barrel. i have taken this gun apart 20 diffrent ways til sunday and only thing i can think of is it is the damn barrel adapter but now i cant take it out someone please help me here dont know where to start other than the adapter i got sent to me.