Hey guys

Hope you're all well and all!

I've been having some problem lately getting a grouping from my QB78DL :S It used to shoot sub 1'' groups at 30 yards and just lately it's just been doing absolutely rubbish. Seals are all good as i've changed them all but no improvement. Using the same AA field that gave me the good groups. Had a silencer clipping problem but that was fixed, the adapter had been shifted out of line in transit.

Could it be a crown problem? Valve problem?

Have re-polished internals to make sure they are smooth and no problem there but the groups are honestly about 6'' at 15 yards

Any help appreciated and i don't have access to a Chrono anymore so no 'tampering' that could improve power can be done really. Also the thread on the underside screw for the valve assembly has gone so that can't be removed not by me anyway i am ill equiped.

Cheers and all the best,
Lewis