I am now running Turk's recommendation for clutching, on my 99 SX. What a differance, The engine just seems to be in the perfect rpm at every moment. My Milage also increased. I usually lead the group I am riding with, my wife is usually the tail gunner. She has a 2001 600 DLX I now always use less fuel than she does, same trail, same miles. Turk, would your recommendation for the 99 600 SX be applicable for the 2001 600 DLX?