I just remembered, at around that time I cleaned my clamps' teeth with rubbing alcohol. Since then, I haven't had to over-tighten the clamp and there hasn't been any more grinding.
4 racquets: Dunlop, Dunlop, Dunlop, HEAD
Alpha Pioneer DC Plus stringer
Last edited by MuscleWeave; 11-09-2010 at 03:35 PM.