If the clutch is slipping, like the engine revving up when you accelerate with the clutch out, & you have some freeplay in the linkage then you are due for a new clutch. If it was clean & dry when you looked up in there then I dought you are getting oil on it. It is either worn out or something in the pressure plate broke. It,s best to buy a complete new kit. The remans are inconsistent.
