Just had a great fitting session in Winston-Salem , NC . Replacing my AP1 712 irons S300 shafts. After two days and 3 hours and several different shafts, I found that the Graphite Shafts (stiff) gave me the best results (also eliminated some elbow and shoulder pain I was having when I hit my clubs). I'm 58 with a 12 HDC , Retired and play golf at least 3 times a week. I'm just nervous about investing in the Graphite Shafts after playing with only steel shafts in my irons.......anyone else made this move?