I have the 910 19 degree and 24 degree hybrids with the diamana ahina 90hyb low mid flex s shaft in them. I want to replace them with the 915 models. I recently had shoulder problems and have been through rehab but told to manage it and swing a little slower. I have a newer I believe 915 17 degree fairway with the diamana 72 x5ct flex s shaft and it feels lighter and feels good. I am assuming I need the S+ 70 Blue 70 Hyb stiff shaft. I want to buy the 21 degree and the 24 degree. Any advice would be helpful.
Thank you
Vern