Hi, I just bought a 2003 gtx 185hp. The jetski reaches up to 53mph at 7000rpm ( I think it should reach up to 68mph). The supercharger is brand new, I bought it OEM from seadoo and installed it without problems. It had problems speeding up from dead stop and didn't have high end speed. I saw that the wear ring needs replacement and I tried to take things apart. It looks like I took everything apart from the outside and the pump is not moving at all. Is there anything inside I need to unhook? I need some help or direction. thank you, thank you, thank you.