I suggest to wrap the grip up aroud the shaft. There is a formula to calculate it. cm of shaft covered with grip = 0,9378cm * [Number of your Astrox without Letters]/10 * [bodyheight in cm] / [armlenght in cm measured from the wrist + bodyheight in cm] Hope it helps, but only work with AC102EX Red. The RED stands fo REDuce steepness.