Ryu Arcturian wrote: if you've already got the mag disassembled, collect the o-rings and soak them in silicone oil for 20-30 minutes, and put the mag back together, the thread on Arnies there's at least 5 instances I can think of where this happened, and this was the solution that worked each time.
Thanks. Good idea but I found what my problem was. I fixed it --kind of-- and then I managed to destroy my valve right after.
I disassembled the magazine again and almost lost the spring that's at the top. Spent 5 minutes on the ground looking for it so make sure you work somewhere clean where you can find things if they happen to fly away.

The two pictures below show the stock valve right out of the magazine (I had Teflon tape from before still on it).


I used a pair of pliers with tape to softened the edges. As you can see I scraped up the pin end of the valve pretty good. Nothing that will cause problems with performance but taking it in and out too often could permanently deform the end. There is suppose to be a tool to use but I don't have/know where to get one.
On the Philippine airsoft forums I kept coming across people talking about a small o-ring dislodging itself when using propane. The red arrow on the next photo shows which one I'm talking about.

Upon closer inspection, it was indeed deformed and kinda popped out of its seat. I reseated the o-ring with a fingernail and then used super glue to hold it into place as done by other people. I let it sit as indicated on the bottle of glue. I then filled it up with gas and behold! It worked. The magazine filled up with gas instead of spewing it out the top like before. I managed to shoot off half a magazine running on airduster when i pulled the magazine due to a BB jam. When the magazine came out i noticed a continual trickle of gas hissing out the top. NOOO! So yes, I found the problem and then managed to fix it somewhat. With proper o-rings, this mag would be great.
So here is where I FUBAR my magazine. The magazine was leaking slowly but it was still charged with enough gas for at least another full clip. I managed to hit the lever on top of the mag that releases the pin into the 'closed' position through contact with the bottom of the magazine well and also press the pin in slightly with my finger (Everyone says DON'T do this and now I know why). This effectively caused gas to spew out and then cause the pin to out right after. OOooops, I had managed to shear the retaining pin off. The blue arrow in the next photo and the one above will show the difference.

Without the retaining pin, the upper seal falls off.

The bronze/brass part becomes useless since there is slack in the system and off it goes.

Lastly, with nothing to keep it all in place, pop, off that goes too.

So I now have a busted valve, a face full of bitterant and a very bad start to airsofting. My question, are there any replacement valves out there that you recommend to replace this or would buying a new magazine (probably not AGM) a better option? Are there any magazines that don't have this loose o-ring issue in the first place?