I know in the past, Titleist used to tip their shafts 1/2 inch to play true to flex in their drivers. I understand this no longer happens?, why would that be?, I am going to be putting a AD IZ 6S in my TS3 driver, and am thinking of tipping it 1/2 inch to play a little stiffer, I am between a S and X in flex, anyone have any recommendations on how much tipping to play a hlaf flex stiffer or so