About 4 years ago I had carpal tunnel real bad in my bowling hand. So I had to shorten my span and relax my pitches. After that my carpal tunnel went away and my backend (ball) went with it. Now I have reverse my pitches and my backend (ball) has returned. My question is typically How far can i reverse my pitches before lengthing my span? I really don't want to plug all my stuff so if i can surface plug the finger I think that might help.
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wizard

It's for every 3/8" pitch change, a 1/16" in span change is necessary to maintain the same feel in stretch. 5/16 - 3/8 close enough..!! =:^D

my hand is normal now and i like my current span. That"s why i"m playing with my pitches
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wizard

> Wizard, you are contradicting yourself so bad, can't tell what you want.
> Finger pitch reverse is towards the thumb. The more reverse, the more lift,
> more pain, more length, later hook. Forward finger pitch is less lift, less
> pain, less length, earlier hook.

You got your pitches backwards (previous post by All10 is correct), but you sure got the pain part right.  Too much forward pitch in the fingers certainly is painful.  I know that from first hand experience.