I am trying to use the shaft MPF score to guide me in my next iron shaft purchase. I currently play Project X Flighted (4B2M). In the questionnaire, I dont believe I need a hook or slice fix, but I notice that the majority of shafts are rated to help fix a hook. Would you please let me know why this is? Also, which specific metric is used to determine hook/neutral/slice correction? Is that based upon high, mid, low torque? Thanks.