I just received my new project x 6.0shafts that I decided to get after a test fitting on mizzy optimizer... It told me that I need DG X100 or project x 6.5 after swinging a 6 iron at 93 mph swing speed.. I wanted to get the shafts spine aligned and was wondering what would it cost per. Shaft and is there a preferred place to spend them to ?? Any help would be great thanks..