First thing to check is to see if you are impacting the center of the clubface. Autoflex does not guarantee a center strike every time. If it seems that you are way off the sweet spot, be sure to check your swing weight (swing balance) to see if the head feels too heavy. As mentioned above, Dumina recommends swing weight between D0~D2, with SF305 and SF405 being closer to D0~D1. But if you do not see distance gains and way off-center dispersions (inconsistent impacts), then try to further lessen the swing weight. Some 110+mph hitters have reported that D0 (even C8) swing weight stabilized the head even more for speed and accuracy. Next, check your angle of attack to see if you are in the negative loft. Unless you have a faster swing speed (in excess of 110mph), a positive angle of attack will be more beneficial in getting the ball up in the air with less back spin. In hitting up on the ball, some found that moving the ball an inch or two toward the left foot at address helps to hit up and create a positive angle of attack.Lastly, check to make sure the shaft is not cracked or splintered. If damaged, the shaft may not be able to deliver the proper load and release on impact.