@GolfSpy_APH the bias part I think is fixed a bit bc they black out all the shafts and you don’t know any of the specs, you are using the numbers they put on the club which looks like 3 club each set and the clubs are numbered 1,2,3. But I do see the by your self part with the data, I am going to use a pga pro I know to help me on a track man to go over the data. Also when you send them the data they set up a call to go over it with you too. But def understand the hesitation.