My air cannon will not work. When I push the trigger I can here the selinoid click but no bang. The back of the selinoid was open and I am not sure if it was like that( all the air was shooting out the back of the selinoid) so I sealed the back up but all I get is click and no bang. The air cannon is from DC Props. I was thinking of changing the selinoid but my hall sucks now and I want to try to get it working by this weekend. Any info will help. Thanx