After installing my ST it is still chattering when i engage. I almost never abuse the clutch i dont understand why this is happening. Im going to rebleed and adjust my master cylinder. If this doesnt work im gonna chalk it up to installation error.

 

From McLeod's FAQ site:

Q. What could be the causes for clutch judder (chatter or shudder)?

A. Judder can be the result of any number of problems. Possible causes may be as follows:

Improper break-in procedure.
Flywheel was not properly resurfaced before the new clutch was installed.
Flywheel is not parallel, or the friction surface is out of parallel with the crank flange surface.
Flywheel has severe hard spots or hot spots.
Flywheel has an improper step or cup dimension.
Damaged or excessively worn CV joints.
Bad u-joints in driveshaft or u-joints misaligned.
Excessive backlash in differential.
Excessive driveline angle.
Bad leaf springs, bushings or mounts.
Improper gear ratio versus tire diameter.
Defective pressure plate and/or disc.
Disc has inadequate or no marcel--not enough cushion between friction facings.
Oil or grease contamination on clutch facings.
Worn or damaged clutch linkage.
Bent cover assembly and/or disc.
Improprely tuned engine.
Worn or damaged engine mounts or transmission mounts.