Ever since I got the wildcat it has been very hard to slide the probe in the fill port on the gun. I have to push the probe in hard and push in the opposite direction on the cylinder so I can get it in. Lately it has gotten worse and now I’m seeing premature wear on the probes o-rings. I just watch a video of a guy one handing the fill process on his wildcat. That would be impossible with mine. Nothing looks to be obstructing it and the port looks clean. What are some options/opinions/tips? Is there anything I can put on the probes o-rings to make it slide better without contaminating my air cylinder? Thanks.