Originally Posted by suicidal stitch
The gun is supposed to be cocked when you air it up to begin with. When you air the gun up when the gun is not cocked, the striker is pushing up against the cupseal, causing the cupseal to not seal against the valve, causing your leak. When you cock it, the striker is held back by the sear, allowing the cupseal to sit flush up against your valve creating a seal.
If it doesn't leak when the gun is cocked, and shoots fine, you don't need a new valve. Plus finding one is hard to come by unless someone is willing to part out their WG/WS for you. Valves aren't your typical wear and tear on these guns.
great words man. Thank you. Ill show my brother what you said.