skinner

Ok i bought this marker only used 3 times and i let my friend borrow it and he onyl used it once and i got it back and hooked nitro to it and it had a little leak to it so i thought take it aprt make sure everythign was in good shape and i hooked the air back up and it stopped then i stated shooting it then it leaked bad in the grip area so i took it apart and replaced all the orings and tightend the screws for the solenoid and i put it back together and then it would even turn on idk wtf is wrong plz help thanks