Gamo Urban fill probe

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.
 
The picture is hard to see the actual measurement between the two o-rings, if the lens is lined up with one it is going to look like it is on a different line than reality. But the distance between the two o-rings on my probe is 6.5mm. My probe inserts and has a positive stop, no leaks. The fact that if you back yours out a touch and it works make me wonder if somehow it is going in too far. Maybe a damaged/faulty/wrong probe? What does yours look like compared to this one?
1547003118_1921756795c3564ee8c8e95.39530022_IMG_0039.JPG

 
  • Like
Reactions: Tinbuster
Thanks for the reply Azycray. My o rings are the same distance apart but my probe is longer and the diameter is the same throughout. It is a bsa fill probe but is clearly different from yours. Is your probe pictured what came with your Gamo Urban? I just assumed a BSA probe would fit. Thank you so much for the help. I will sleep better tonight having an idea what the problem is.

Tinbuster