@SkiJay Thanks for the numbers, however I can't get the dft as far back as .705 on the 68.5 without modifying the fin slot, hits the clamp screw at approx .740. I have tried Skidawgs numbers and for some reason, rff vs lff and hard shells vs Wileys,or195lbs vs 215lbs not sure why but just didn' feel right. This ski is very sensitive to small changes.