I just had a fitting at weekend for the GT driver.
Current driver is TSR2 11deg head set at C4 surefit neck so 11.75deg loft.
Long story short was fit for GT3 11deg head set at C4 Surefit neck again loft to 11.75deg with weight at T1. saw very good gains.
11deg head chosen to kind of match current head and help with launch.
My local club pro has an ex demo (his club he used indoors only) that he is offering me basically half price but it is the 10deg GT3 head on the club.
My question is setting the 10deg head to B4 effectively lofting to 11.5deg make much difference compared to what I was fit for with 11deg head lofted to 11.75?