I have a UST mamiya recoil zt9 470 F4 with stabilized tip in a Callaway big bertha 3 hybrid, I hit this club best out of any club in the bag. My ave carry is 165 meters, what driver shaft spec’s would you suggest for my driver? Appreciate your help, cheers Colin

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Can I ask also based on the above, I have a Callaway UT driving iron that I can’t hit whatever shaft I try. Would this shaft suit or should I sell it and stick with the hybrid?