Bought a Wildcat MK3 sniper .30 about 6 months ago. Rifle was performing great until about a month ago. Suddenly developed very inconsistent FPS. Would jump from 880 to 950 then down to 750. Really messed up POI. Took out the Amp regulator and checked, everything seemed okay. Problem continued until finally the regulator would not allow any air to pass through at all. I had installed the dual transfer port and the power plenum. I then ordered a Huma regulator. The regulator had alignment problems with the adjustment hole and would develop air leak problems. I finally ordered a Lane regulator. Took a month to show up. Installed the Lane and everything aligns well and shot performance has shown the best ES of any of the regulators. Have watched many of Lane's videos and learned a great deal from him. Highly recommend the Lane regulator.