Your span at 4 5/8" would probably dictate different pitch, in my opinion. My span is pretty close to that and my thumb pitch is at zero both directions. Some would even try about 1/8" reverse.
Fitting hands is rather subjective, so you may need to experiment a little, but there's no way I would have your pitch at 1/4" forward until I tried going the other direction a little.
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Lane Carter, Strike Zone Pro Shops - Salt Lake City, Utah
Brunswick Amateur Staff