I've never fixed a Kaos-D, but I have worked with a few of their other guns. The valves can be touchy, like Fubarius said. I usually replace both the valve body orings, clean the bottom edge of the poppet that contacts the valve body and then put some tri-flo on it. Usually helps.
Metadyne: Replacing broken parts, with NEW broken parts so you still can't use your new gun.
Originally Posted by PistolRogue
Redheads, brass, and wood; it's an MCB thing....