Air Venturi Avenge-X reg creep

The o-rings in the regulator of the Avenge-X seem to take a beating -
I switched to only using pure silicone oil rather than silicone grease - that helped a little - but I have replaced the o-ring inside several times.

Replacing the tiny o-ring on the end with a slightly tougher material made the biggest difference but unfortunately, I don't remember where I got those o-rings (sorry...)

If you accidentally use Shore 70 o-rings instead of the correct shore 90 (harder) o-rings, you can see the rings fail really fast (did that once).

The pressure does creep when the gun is sitting for a long time but hasn't gone past 200 bar unless left in the sun. I shoot at about 175 bar.

I have found that if I dry fire before loading a mag, I can get eight rounds +/- 1 FPS shooting 34-36 grain pellets or slugs - slugs running about 900 FPS and the pellets run 950 FPS (same tune). Delivers 65-70 foot pounds but I've done a few mods to other parts of the gun.

From a full fill at 300 bar down to 180 bar, I see speed drop 5-8 FPS (less than 1%) over 48 rounds (I have the bottle version).