when kx [2001] is running, clutch gear selector rattles back and forward when in neutral or in gear, but when clutch is pulled it stops, but it restarts when gear is selected and clutch is released. i can hear sort of grinding noise from clutch [sounds like kick start is still half kicked but its not] when riding bike clutch slips after about mid-revs, problem just started during riding down small steep hill. before bike is warmed up clutch lever feels okay and tight, but after its been running for 2 or3 minutes lever goes slack, i have checked cable, seems fine and adjustment seems okay. any idea's?????