I have a 2004 ktm 250rfs with the HT-Racing 351 kit with their head work, Ktm sx exhaust and a powernow in the carb. I'm looking for jetting from sea level to 4000 feet in elevation. I have the JD jet kit but when I bought it my bike was still a 250. The needle should still work just wondering what set up I should use ? Jet size, needle & clip position?? Thanks for the help.