[skaterjoe]

I had that same problem.
what i did was:
push on the release buton and spray silicon whare the gas comes out normaly. this put the silicon inside the mag.
then, i sprayed silicon into a ziploc bag. enough so that when i put the mag in and ajusted the bag acordingly the place ware the gas was leaking out was coverd in silicon. i then let it sit over night (one or two i cant remember) and when i took it out it worked.
try that, if it dosnt work you probably need to replace the seals in the mag.