I just got a WE desert warrior GBB pistol (WE028) and some king arms soft air green gas for it. I went to shoot it today, and when I went to fill up the magazine with gas, nothing happened. No hissing, or smoke or anything. I was holding te magazine upside down and same with can. I was also not putting any pressure on the release valve. I live in New England so it's rather cold, so I was thinking that maybe the gas just expanded too much and couldn't fit through the nozzle. So I came inside and tried it again, still nothing. I wAited for it to warm up some and did it again, still nothing. I'm not sure if it's my mag, or if it's the can/nozzle. Any help would be appreciated!