Well all I can do is tell you my experience with moving to away pitch, and I think you are on to something here. I was at 3/8 palm pitch and went to 1/8 away, and it made a pretty big difference. I combined this with a change from 1/4 reverse to a quarter forward.
The difference was that I stopped grabbing the crap out of the ball. Even though it felt "comfortable", I still had to grab it to stay in it long enough not to drop it. Now my thumb is straight and relaxed inside the ball, and it comes out clean and easy.
I have gained revs and pins on my average since I have made this change and gotten used to it. The result was a cleaner, more powerful release, and I didn't have to change anything except concentrate on rolling the ball more than lofting it.
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~SprayNpray
-formerly known as SawFreak