Britt, I just got a KE4 TC Driver & 4 Wood and both of them have the UL shaft in stiff flex. I put a 12g weight in the driver and 14g weight in the 4 wood. This combination seems to fit me well. Can you suggest an iron shaft that might give me the same type feel? I assume I might need to try the Ke4 Tour+ iron head since you can change weights in the toe.