I have a ZForce 950 sport. I have the same problems others on here have described and that is the clutch disengaging at 3000 RPMs. I ride in a very rocky area and while dropping off rock ledges it is very hard to keep the machine at 3000 RPMS which results in the machine free wheeling down the steep hill. I see where riders have made modifications to their machines to help with the RPM issue, I was hoping someone could tell me the exact parts they used rather than a general statement about going to a lighter spring and or weights. I am a rookie at all of this but would like to order the correct parts to resolve the issue I am having. thank you