Considering replacing 20 degree Fli-hi CLK with 21 degree 910H. The shaft in the CLK is Dynamic Gold Lite S300. Looking for recommendations for shafts to consider. My driver is a 905R with UST Proforce V2 76g stiff, fairways 910F with Project X 8C4 ( 3 & 5 ), irons DG S300. I know the only way to find out is to hit them but mostly only the standard shafts are available. Many thanks.