[SJAaz]

How much do you tilt your head to get your eye above the bands? Are you pinching the ammo dead on top of your index finger, or letting it slide down behind for a better grip?

 

[SJAaz]

There are guys like Bill hays at PP, or Nate over at SS that could fix you guys up. But if I had to bet, I'd go with something to do with your release. Probs letting that ball sneak down the backside of your finger causing the old "speed bump" problem. Just my guess, but that's where I'd look first.