MAJOR problem (ULE Body, RTP rail, X-valve, I-frame)

[Smoken]

I've got a major problem with the marker described in the title. When you gas it up, the bolt sticks forward about a quarter inch and vents fiercly. If I push it back, it will sometimes fire several times, sometimes none at all before doing this again. Also, there is a wierd clicking noise every time the gun fires/gets the bolt pushed back. I've tried everything I could think of including carriers, shims, orings, and on/off pins. Any help would be appreciated greatly.

[Dayspring]

You need to go up a half size on the Level 10 carrier using the SAME oring you had been using prior.

[Aegis]

Did you use an RT PRo on/off pin?

[Smoken]

Thanks for your help Dayspring, but if it were that simple I could have fixed it myself already. I've tried all the normal stuff and can't figure out what's wrong.

[tmnothing]

You need to make sure that you are using the RTPro On/Off assembly with your x-valve since you are using an RTPro Rail. The reason for this is because the sear assembly is a little different so the on/off pin is a different length than the one that comes with an x-valve from the factory.