One point not mentioned in the informative answers is that of the writer's comment about picking the ball up....I infer that you are putting your thumb and fingers in the ball when it is on the rack and then picking it up with your hand in the ball. You will naturally grip ther ball and probably bend your thumb when you do this. It is better to pick the ball up with both hands and not put fingers or thumb into the ball until you are in your stance. Then, put the fingers in, flip the ball slightly so that your hand is under the ball and then slide the thumb into the ball. The thumb will be straight.There shouldn't be any feeling of "gripping" wiuth the thumb. Most drillers, at least those IBPSIA and MoRich trained, recommend a slightly larger hole with room for tape. This allows for adjusting the fit as the thumb swells or shrinks.We usually put the white, slightly rough tape on the bottom of the hole and the black smoother tape on the top and sides. The other comments about reverse pitch and lateral pitch are right on and the pro-shop operator should be able to adjust these easily.
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