I have a Wildcat 2 that I am trying to make a slug shooter out of it. I have the dual high flow port with high flow pellet probe installed. I have a Huma regulator set at 150 measured by guage. I just installed an 11 gram hammer. As far as I can tell, I can not keep my pellet probe opening aligned with the dual port. As soon as I cycle a couple pellets the velocity drops. If I reset my pellet probe in as far as I can get it, the velocity goes up. Cycling pellets seems to cause the pellet probe to slide back and out of alignment. I am baffled as to stopping that. Any thoughts welcome.