What servo arms do you use on your buggies?
I have the RJX FS-0521HV servo and have used the Robitronic lightweight aluminium servo horn. At the last race, my fellow competitor pointed out, that as the servo arm doesn't have any offset, the nut used to hold the rod ball end on to the arm hits the servo case and limits steering end point. The original Yokomo horn puts the servo link at a such big angle, which in my opinion makes the steering uneffective.