I am right handed and have a 5 inch span and my thumb pitch is 3/8 reverse 1/8 right lateral (under palm). It seem like I really need to get around the ball to get my thumb out, which causes me to be so inconsistant. The ball also likes to hang up on the index finger side of my thumb towards the nail.
If I had the thumb pitch changed to lets say 0 or 1/8 left lateral (away from palm) would this help my thumb come out cleaner without having to get around the ball so much?