Hey guys, call me cheap, but I have a question. I have an Indy 500 and I have stock primary weight and spring but it is not doing it for me. I need a higher engagement but don't want to overRev on shiftout. If I were to drill out the heel of my weights (I have an extra set) all the same diameter on the press. but left the tips alone could I acheive this, or do you think I'd put the balance all out of wack and destroy the clutch? I realize I would have to calculate the amount of weight to take out and at which point. the question is though whether you think this is possibly balance wise?