Put your thumb in its hole and lay your fingers over their holes, stretched enough to make the web between your thumb and ring finger slightly taut. The leading edge of each finger hole should fall half way between the two finger joints + or - ~ 1/8". If the ring finger falls closer to the second joint (span is shorter) than the middle finger does you've got a fit problem. Also, the finger pitches should be based on your joint flexibility and the hole or grip should fit each finger the same. -- JohnP