Originally Posted by Riketsu

Did you place the weight in the opposite direction or the standard direction??

Did you use a setscrew??

Placing the weights in the opposite direction and using the setscrew is what I have found to give the best punch out of corners.

But before achieving a killer clutch setup, you mentioned that your car oversteered on corner exit which may be augmented when your clutch is spot-on, so you might want to watch out for this...