I agree with shortening the span. A few weeks ago, our center had the pleasure of Del Warren and Mo Pinell<sp?> stop in for several hours. Mo spent time working on our lane machine and it's programs while Del talked to me about several coaching and drilling ideas........ anyway, he shortened my span from 4(5/8), 4(7/16) to 4" and 4(1/16)".. We pitched the thumb forward (was reverse) and the fingers 1/8 under.. I am clearing the ball extremely well and have all sorts of control.. But the biggest thing is, getting my thumb in all the way, I am not losing it at the bottom any.. I have nice consistant shots.