Okay, I have always been using more bevel on my thumb hole cuz it feels better.  I am a rev challenged guy. Will less bevel result in a quicker thumb release.  I have tried using more reverse pitch in the thumb but seem to have more trouble holding on and tend to squeeze.  What does less bevel do, if anything, in the thumb hole?

I have been reading the track posts and find this very interesting and educational.  I, too, love bowling and want to get better.  I thought that more revs comes from after thumb released, fingers in ball longer.  Will more forward pitch in both the thumb and fingers inhibit me from releasing thumb first and then lifting with the fingers; in other words will it inhibit getting that thumb out.  I am thinking of trying to do something with my thumb hole first on one of my balls cuz it is cheaper to redrill the thumb ( I use the thumb solid inserts) rather than changing the pitches on my fingers since then I have to plug and redrill the fingers. I was thinking that the thumb with less bevel but the same pitch would let me get thumb out faster, so I can lift harder and quicker with the fingers. It sounds like maybe more forward pitch in the fingers may be beter as a first change than changing the thumb.  I think I want to change one thing at a time to see what works. What do you think? thanks for the thoughts, any more are appreciated.