Hi all

I need some help with my Gamo Compact. I'm new to this pistol shooting and I purchased a second hand Compact ( I love it ). I was shooting it this morning at our club and it just stoped working. When I open it and close it again there is no tension, so I think it is no longer holding air. If this is the case then I asume a seal has gone but which one is it most likely to be and how hard are they to change???. If I hold my finger over the valve outlet there is the same kind of tension as normal when trying to close the gun, when I remove my finger there is no tension again - Could it be a seal in the valve box or is it something far more serious...

Sorry if this all sound a little confusing but any help you can offer would be a great.

All the very best
Andy