Can not enough reverse pitch in the fingers result in an inability to clear the thumb? I feel I am not getting a clean release, and when I put my thumb in without the fingers its snug but easy to slide in and out. However, with the fingers and thumb in I can't even hardly get my thumb out the ball. If I have to back off a shot I have to take my fingers out first to get the thumb out.

Thats what I figured...thanks JohnP

makes complete sense which would probably be why I need a ton of front bevel in my thumb to get out clean.

Heck - if you are using Turbo Lifts or Power Lifts, the span IS longer than it "actually is"

My spans are good, its actually in a ball I got used on here that I didn't want to plug the fingers. So the pitches are different and not the reverse I am used to and I took most the reverse and left out the thumb on this one. Figured it was the finger pitch not the thumb pitch causing the hang up.

I have to agree with JustRico I had similar problems as you described and when all was said & done, I found a new pro shop driller who shortened my span and actually changed my thumb pitch from from 1/8th reverse to 1/8th forward pitch.  This change has greatly improved my release and game.  The span change wasn't drastically shorter, but it made a big difference as I got the proper relaxed fingertip grip and I don't subconsciously squeeze my grip like I did before.  Bottom line, it has helped to free up my armswing and increased my speed & rev rate.  My old span and reverse thumb pitch caused me to have problems exiting the thumbhole cleanly and my release was definitely inconsistent.  If you have another pro shop driller in your area with a good reputation, I'd definitely recommend that you discuss the problems you're having clearing the thumbhole and then have your span re-checked.