Hello im pretty new to gas guns and need some help. Anyways I own a WE 1911. This weekend I went airsofting and drew it from my holster and it only shot 3 rounds and ran out of gas. I know my mags dont leak and i fill them for about 10 seconds. Also forgot to mention i even reloaded and my other mag shot 3 rounds also. So I got mad and put my pistol away for the day and shot it later. When I got home I filled it with gas and BB's and it shot the hull 30 round mag. So when im running around with it in my holster for like 30 minutes it only shoots a couple. So im thinking my valve is leaking. Can someone tell me whats wrong and how i can fix this problem. Thanks!