I like my thumb snug but not to the point of sticking in the ball. My game (up until a week ago) would start out with the thumb snug like I like it but after a game the thumb would be so loose that I found my self worrying about my grip as I started my shot. To fix the issue I decided to have switch grips installed in all my balls. I now love the fact that each ball feels the same. I also use oval finger inserts.
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