I'm noticing that upon my release I tuck my pinky.  When I try to release the ball with my fingers flat on the ball it seems that I hang up in the thumb a bit and can't get out of the ball clean.
What would this say about my grip??  I'm thinking that I might have too much right pitch in the thumb and my tucking my pinky helps lift/push my hand up and over so that I can get out of the thumb better..

I also notice that when not tucking my pinky that I hang up more when I try to get more axis rotation.
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18 mph,350 rpm,PAP 5 1/2 x 3/8up, 15 deg axis tilt, varied rotational axis deg.. usually 45+
HighGame 300 x 5, High Series 808
Book Average 220,PBA Xperience 185