Hi all , basically the slg I am selling I gassed it up today to check all was ok , and I am glad I did as I found it was not firing , there is definitely air getting into it and you can hear the hiss when you unscrew the bottle , the eyes appear to be working ok but have cleaned them just in case , and when you stick a finger down the feedneck the led lets you know they seem to be working fine , I have tried two new procells , so all I am getting at the moment is that it switches on ok ,the led is red then goes to green once you switch the hopper on and it feeds , but when you pull the trigger you hear an audible click from by the grip but then nothing and the led starts blinking green , so any ideas please ? Cheers all .