Looking at DFT measurements from D3, I have found conflicting information. On their website, there is a 0.050 difference in measuring with needle vs flats. On a ski set up sheet provided by them, there is a .040 diference between the methods. I prefer to use the flats method as I never find the needle method to be repeatable. Does anyone know if there is a constant conversion factor between the methods, or does it vary from caliper to caliper.