Okay so I have no clue what I did wrong I thought I got everything right and that I would have no problems with my setup. But I was wrong of course. So here is what happened I have this gun http://i.imgur.com/h3ZYI.jpg
Only things that have changed is that I added a huge drop to mount the HPA tank on there with and an X-valve. So tonight I got my 88/45 Carleston back from repair due to a damaged pin and I was going to test it out since it was set at 1100 psi (also my first ever personal HPA tank) and I wanted to check out that sweet spot with my Qloader. So I loaded it up and screwed in the tank and made sure it was aired up and I took it outside to test fire. I Fired the first few shots and everything was okay and then I tried to get that sweet spot and all of a sudden this HUGE blast of air came shooting out the back of the valve (where you adjust the FPS) and it just blasted my face and I was scared yet curious as to why it only fired one shot. So with the living daylights scared out of me I proceeded to test it but from a distance. I tested out one more shot and it happened again but this time it was bigger and then suddenly my macro-line burst right by where my face would have been and it started to empty out the tank.
So whats up I dont understand why the heck this happend. Give me your knowledge because I have a big game this sunday and I want to be ready for it.
NOTE: The valve is an RT,X-valve mix and its all messed up and I cant get the Z-lock pin in since its upside down but the set screw fits in just fine and I have never had a problem with it before.
NOTE: In case if this matters my macroline setup is what you usually see on X-mags I believe. where it starts out from the ASA and follows you grip and then along the rail in one big curve so it doesn't get in the way of your hand.