I went from O to 3/8 forward on my ring finger, at the suggestion of my driller(0 thumb). In addition I also use vise power lifts. Overall, we have been setting up my balls with a relaxed span, 43/8.
I plugged a power machine, and redrilled it after remeasuring with a jayhawk ball fitter, 49/16 span, with 1/4 reverse in the thumb and 1/2 reverse in the fingers. Ball fills good/comfortable, although the span is maxxed out for me and I have been thinking that I have been doing pretty good with a relaxed span. I will have to see how it works out on the lane.
I remember someone posting that 0 to forward on the thumb is better and promotes a more relaxed grip. I could not get out of the ball with reverse on my fingers and 0 on my thumb, so we had to adjust to reverse on the thumb.
I immediately noticed that the reverse on the fingers shifts the wait of the ball more to the pads of my fingers. I do not know that this will help with revs but we will see. I generally do not grab at the bottom of my swing anyway, so I do not know that the change will matter.
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