I am playing the GT3 @ 10 degrees and just completed a fitting, and the numbers came back with the GTS3 @ 9 degrees. My question is that in my current driver I have the Ventus blue 6X velo-core, this wasn't available in during the fitting, so we used the Fujikura Project X Hzrdus 60 X shaft. The numbers were good, and showed near equal carry distance, but more overall distance by 10 - 12 yards. Can I expect the same or hopefully better performance if I put my current shaft in the new head? I am 64 yrs old with a 2 hcp. now, but usually during season I will drop to a 0 hcp, showing 104 - 106 swing speed, 280 - 288 total distance.