Quote Originally Posted by codejunkie
Sort of a level 10 problem I think. I just got a ult and tried to install it but after a few shots the marker would just start venting air down the barrel, so after toying with that for a good hour I decied to switch back to the old RT on/off and see if it that worked.

I gassed up the marker an pulled the trigger once and it fired like 3 times before the bolt got stuck in halfway into the chamber and the marker started venting again. I also oiled it before the tests

Any ideas are much appreciated
Code
The fact that it fired 3 times on a single shot before it stuck is a pretty good indication that its related to the on-off and not a level 10 problem. It is more reminiscent of an on-off or possibly a sear issue. Is the rail bushing in place? If nothing has changed, I suspect the problem is an on-off issue. Perhaps there is a piece of dirt struck in an oring.

Even though it stuck forward with the RT on-off, fire it a few more times to seat the oring and blow out any excess oil.