Hello together, since recently it is hardly possible to switch from 1 or 2 gears in a standing position. The gear lever is difficult to move, which means that the idling is always skipped. In addition, it bangs extremely when switching (even with cold oil). In addition, the motorcycle pulls forward in 1 gear when the clutch is pulled. And at about 7000rpm the clutch slips briefly as soon as I drive out of the city onto the country road. Which clutch parts should be changed (I hope) the gearbox itself is ok)? Are there certain manufacturers which would be recommended and do I need special tools? Some more information (vehicle data): R1 RN09 (2003) mileage: 35,000km oil: Castrol Power 1 Racing 10W50 (already used for about 4 years) Driving style: rather fast/mainly rural road LG