Pain in the second finger notch
- Finger and thumb hole distance is too short.
- The rubber finger was stretched, causing the finger hole to widen, causing the bowler to stick his finger too deep to the second knuckle.
- Put the ball, measure the distance finger and thumb to fit the hand.
- Replace new finger.
Pain in the sides of the finger tip
- The finger hole is drilled diagonally to the left or right too much.
- The finger hole is too tight, squeezing the sides of the finger.
Re-drill finger with proper drilling direction and large hole. If the drilling direction is ok, just drill the finger hole to enlarge.
Pain in the index finger and the palm of the hand near the base of the index finger
The position of the bottle in these two areas is considered normal depending on the way the ball is held and released. However, if you have pain (no pain, then carefree) in these two areas it means that when holding the ball, you turn your hands too much to the right, making the pressure on these two areas too great. It can make you feel like a sprained pain, numbness, especially in the palm of your hand at the base of your index finger.
Reduce the hand rotation to the right too much when handling the ball and swing.
Pain in the side of the thumb on the palm of the hand
Painful position A: Finger and thumb spacing is too short. Or the thumb hole kicks out (reverse) too much causing the base of the thumb bone to press on the edge of the thumb hole, causing pain.
Pain position B: The thumb hole is too small and kicks too much to the left (right hand).
Fill the thumb hole and re-drill with more reasonable distance and angle. You need to be aware of the tilting left and right, the angle of the thumb forward or reverse of the thumb. This is money to help you get rid of your thumb easily when releasing the ball and not hurt your hand when the bowl.