MM AIR Valve, Weird Shootdown

[Nevit]

Hey, I'm fairly new here. This is my first AGD marker so it may be something simple.

The problem I'm having is when i pull the trigger all the way back it feels like the valve runs out of air. If I tap the trigger, only pulling it back the first few mm's the sear is tripped and velocity is fine, However if I pull the trigger ALL the way back the tone of the shot is much lower the velocity is much less and it sounds like excess air escapes out of the barrel after the shot. This seems to happen with any velocity adjustment.

I have rebuilt and lubed the valve to no avail, it did, however, get rid of my occasional bolt stick.

I have a MiniMag rail and body, warp left with a AGD Ygrip and the stock AIR (minimag) Valve, matching numbers, lvl 7 non-fomie. High pressure air in, unregulated.

Pictures speaks more.

I usually use a tank; the stock was for the picture.

Thanks in advance.

[athomas]

Is your on-off top an older version or newer version? The older versions had an X cut in one side. The newer version is the same on both sides. If you put the older on-off tops in upside down, weird things happen.

When you hold the trigger in after a shot, can you hear any leaking? Any leaking would indicate a problem with the on-off section of the gun.

Did you replace the bolt spring when you changed the orings? The bolt spring is a consumable item and should be replaced regularly.