Why is everyone so affraid to use weightholes? Do exacly what ebonite says. Choose a pin loaction from PAP, then MB from PAP, and finally pin height above the midline. Draw your lines and weigh the ball on a scale. As long as you are within roughly 2.5 ounces of a specific weight (pos/neg side, thumb/finger) a weight hole will be able to take out the necessary amount. I just can't stand the fact that people are so against using weightholes. They enhance ball reaction, which is great for people with low rev rates. They are also great for people with higher rev rates, as most holes will help to burn off some of the balls energy, making the backend motion for controllable for these players.