I am no pro. But I think if you can keep your hand behind the ball like Shockley points out it can help correct some of the other issues. By keeping your hand behind the ball it will help keep your strength behind the ball so you wont have to put your shoulder and back into your throw, which would help keep you from coming up at the end of your swing. By turning your hand at the end its putting all the force on your fingers to get that ball moving. If you can keep your hand behind the ball you now have your full hand and arm getting that ball down the lane.
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