Hi,
Noticed since I got my 913D2 Proforce V2 76 X, I am more inclined to get tennis elbow pain after a practice at the range or after a game. I also use AP2 710 irons wish Project X 5.0 shafts. A friend of mine was also using those shafts and developed the same pain. He switched shafts on his irons to fix the problem. For me this is quite recent and wonder if I have to consider to re-shaft?