Shadowprowler

i got my new mag RT pro, with the ULE trigger pull kit, and Intelliframe double trigger from the agd website (ordered it before I read about themagsmith.com) and when I first took it on the field, I loved it, and it turned a few heads too. But in one battle suddenly the gun stoped firing. I had to take the hopper off and push the bolt back a Millimeter or so until it clicked into place to get it to fire again. This problem steadily got worse, but I was able to keep going with it, sorta. Later, a friend looked at it (who fixes his own guns all the time but never really seen a mag) messed with the velocity adjustment trying to take it apart, and a small hex screw just above the trigger and behind the sight rail screws on the left side of the body which he thought was the trigger sensitivity. After I made him stop and set things where they looked like they were, I googled the problem and found other mag owners have had the problem, and they all suggested oiling the hell out of the on/off switch, which is the gold square peice on the bottom of the reg. I did this than took my tank and tried it out and found that it worked, the trigger problem stopped, and the marker worked fine. I was then about to oil the marker's nozzle (like it says for standard maintanance of any marker) when it killed the o-ring on the tank. I set it aside and decided to take care of it later, being that I had no spare o-rings around. Well today I got some new o-rings, put on the tank, which had about 1900 psi left in it, and the marker imediately dry fired 3 times. I then hit the trigger (which felt softer than norm) to test it and the gun fired about 10 times in a second and then the bolt jammed in the chamber, letting air leak quickly, and now the tank is empty.
Any ideas what is wrong and how I can fix it? Other than keeping the gun away from my friend that is ;p