Trigger lag, dead trigger?

[thew]

Got my new RT ULE with ULT installed from AGD this year and have one issue. When it is gassed up and sits for a period of time (5-10min) the gun will fire about 3-5 seconds after initial trigger pull. Fires great after that. Not good when I'm laying in wait and want that 1st shot to count. Bought the standard on/off and it does the same but only about 1/2-1 sec delay. I can live with that but like the pull of the ULT much more. Here is some more info:
Probably only have 1-1 1/2 cases of paint through it.
Level 10 seems great, no leaks, bolt stick, or chops. Well lubed and maintained.
Using Pure Energy bottle/reg with 800-850psi output. Not confirmed.
Tried different shim configs on ULT with no change. No run away as mentioned in other posts with alot of shims. Tried 2-9 shims.
Chrono around 280ish.
CP ASA installed.
Did find that I had bolt stick with under-torqued field strip screw. 1/4 turn past hand tight is money.

Any help would be appreciated,
Matt

[secretweaponevan]

Sounds like too tight a carrier.

Once the oil dries/wears off the carrier o-ring, a too-tight carrier will cause excess friction, resulting in your symptoms.

Make sure you are using the largest carrier that does not leak. Do this without shims.

[athomas]

I agree. Remove the shims and go to a larger carrier. Use the largest one that doesn't leak. Always use the same white carrier oring when changing carriers. Its the oring that you are actually adjusting.

[thew]

Thank you!

Thanks Athomas and Secretweaponevan!
You two nailed it. It came with the smallest carrier (no mark) in it and I put in the one with a dot and ring (no shims) and I had no leak. Left it gassed up and came back..... fired right off the bat. Man I love this marker. Complicated yet simple, always reliable.