kwa m11 mag not holding gas.

[DanoftheDead]

Just bought a used kwa m11 (ns2) and the mag won't hold gas. When I fill it the gas just goes right through and out the top of the mag. I'm not sure what to try or how to go about fixing it. Any help would be great.

[MultipleParadox]

Output valve is stuck open
Remove it, clean and reduce, and make sure you tighten it well enough, but not too much as to strip the brass

[DanoftheDead]

What do you mean reduce? I am taking it out now.

[DanoftheDead]

Got it out and cleaned it. Not sure what its supposed to look like when it closes properly but it is sliding freely and I cleaned it for good measure. Put it back in but the same thing happens. The valve rubber o rings all look good but the silver part of the valve doesn't sit flush to the brass not sure if its supposed to though.

[DanoftheDead]

So after 3 hours of tinkering yesterday I have gotten to the point where the mag still leaks from the out put valve but it holds a little gas. I'm not sure what the next step is here before a new mag.
Any suggestions would save me some money.

[BioRage]

Have you tried Teflon tape?

[DanoftheDead]

No please explain.