I am 6" 3"(38.5" wrist to floor), 67, 12 handicap and play Standard 714 AP1s, with KK LBI A shaft, since May 2014. Best club I ever played. I was fitted by my club pro, but my swing has totally changed since then (better). Time to change the grips (again) so, I extended my 6 iron 1" and the balance and swing are much improved. All agree I need to do it to all the irons. Do you know the diameter of the extender that should be used? I also realize I will need to change the lie, but plan to change that after I get the shafts and grips done. Thanks.