I add tape until I cannot bend the knuckle. Period. No problems releasing it cleanly off the thumb, no scars, etc.
What is your thumb pitch? Possibly too much reverse, which causes you to squeeze harder than you should to make it feel secure. In the past year or so I've gone from 1/4" reverse back to zero without any problems. It's nice to be able to relax the grip more, too. Good luck.
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Lane Carter, Strike Zone Pro Shops - Salt Lake City, Utah
Brunswick Amateur Staff