Why do bowlers want a tight fit on their fingers? The only part of the hole that counts is the front, where you rotate and lift. The sides and back are just along for the ride. My MF is 3/4", but I have thrown balls drilled for grips without the grips, 31/32" holes, and see no difference in ball reaction. Use two or three sizes larger grips and I'll bet you don't see any difference either. -- JohnP