There are two things to keep in mind on clutches. Ones is the Oil you use. The C50 is a wet clutch, sharing the oil with the engine. If you don't get the right oil, the clutch will slip. Check your manual and get the right formulation. The second is keeping the clutch lever loose. Check your manual, but I think it is 1/2 to 3/4 of an inch of slop when the clutch lever is in its normal position. That way, the cable is not keeping the clutches slightly sloppy instead of tight together. I have not done the best job on keeping mine adjusted early on (didn't know), and have over 38,000 miles on it and the clutch is starting to go. Also, before the oil warms up, it is thicker, and will slip a little. Don't push it until the oil warms up and is thinner, allowing the clutch plates to get closer together.