Can someone clarify for me . I have the TS2 driver and 3 wood ( 917 previously ) The standard weight in the TS2 driver is 9 gr. In my old 917 I had a 12gr does that mean I need to add 4gr to get the same feel. I ask because my spin rate has gone from 2400 to 2900 Does adding weight bring down my spin rate ..... All things being equal