RT Pro Stuck in "auto-fire"

[keyk17]

I have an RT Pro ULE (X-Valve, Level-10). I took it apart to clean it and when I put it back together to test it it would only rapid fire. Even tapping the trigger would rip off several shots. I didn't intentionally change anything while it was apart. No adding or removing shims, etc. It was fine before I took it apart so I must have changed something by mistake, but I can't figure out what it was. I have tried a different combination of shims with no success (it had only one to begin with).

Any ideas on what I did and how I can fix it?

Pics of the internals:
http://img29.imageshack.us/g/img5992e.jpg/

[Ando]

Sounds like an on/off issue. Ck to see if either one of the top on/off orings are missing.

I can't remember which one will make it go full auto.

[Pneumagger]

Check on off top orings and the oring around the regulator pin (the one in the little brass ring between the valve and the reg body)