So I recently got a Gamo Urban and am having some trouble filling it. This is my first pcp that takes a proprietary probe. So I got the connection to attach to my air Venturi bottle, but when I insert the probe in and go to fill it blows the top o ring out. Any suggestions would be greatly appreciated. I did get it to fill if I pull the probe out some and hold it there. Hopefully there is a better solution out there.