Can you help me understand the basic characteristics of this shaft? I am getting fit soon for a 917 f2 18 degree and demoed the Diamana 60 Lite. Is this shaft clubhead speed related? My speed is 88-91 mph. I am 63 yrs old and a 6 handicap...looking for high launch. I currently play a 917 D2 10.5 driver with Diamana 50 Ct regular. Shouls I have the same shaft in my 5 wood?