I've had the same driver in my bag for quite some time. It's a 910 D3 9.5 with a Project X 7C3 stiff (6.0) 73 gram shaft.
We spent Christmas Day with my son and daughter-in-law and the 3 grandkids.Marvelous time!After we watched the kids open presents, the adults opened theirs. My son got the new TSi-D3 driver 9.0 with a HZRDUS RDX 6,0 60 gram shaft.He was fitted for the driver, and of all the shafts he tried the one in his old 913 D3 driver (a Diamana aftermarket shaft x-stiff,not sure which model) fit him best. The numbers weren't even close.As a consequence, dear old Dad got his old 913 D3 head,which is in great shape and the aforementioned brand new HZRDUS shaft.
Merry Christmas to me!