I did what HRL suggests, new clutch disk, pressure plate, pilot, throwout and refaced the flyweel, smooth as silk for the last 4-5 years.

1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy