I replaced my clutch about a year ago, and ever since the car shakes when I let up the clutch. It only happens when the car is hot, after driving it for a while. It is normal when the car is cold. I used a remanufactured clutch from a local clutch shop. It had an upgraded friction surface (Kevlar I think). I had the flywheel resurfaced by the same shop. I replaced the pilot bushing, throwout bearing, clutch fork, and had the drive shaft rebuilt and balanced. Anyone have any idea what might be causing the chatter? Is it just a bad clutch or could it be possible to have too much grip (engine is stock)?