1-Flywheel not Machined. Grinder it with a Flywheel Grinder Machine. (not with a lathe) 2-Improper Linkage adjustment. 3-Release Bearing lash ajusted too tight. 4-Too much friction in the clutch release linkage. 5-Worn Facings. 6-Cover bolts loose. 7-Oil on Facings. 8-Weak or broken diafragm. 9-Glazed facings. If you want to know if our Performance Kit is right for your car, you need to Know the torque of your vehicle. Click on the "HP vs Torque button at the left side bars to see the formula to calculate it. Kit`s torque capacity is shown after each kit number. Torque in ft lbs Quality Clutches at Warehouse Prices. New, never Rebuilt info@capclutch.com