I recently discovered that my span was too long. Ended up being 1/2" too long! Probably explains my hand and forearm pain! Now I am 4 7/16" middle 4 1/2" ring. My thumb pitches were changed as well from 1/8" in to 1/8" out and the reverse was left at 3/8". The span feels a whole lot more comfortable, but I still am gripping due to feeling like I am dropping the ball. Also now I experience some pain on the right side of my thumb (side closest to finger). Possibly due to the pitch change or does the reverse need tweaking?