I have a '02 WR426 with the following mods: Air cleaner lid gone, baffle out, BK mod, ACV mod, 150MJ, 38PJ, 160MAJ, 65PAJ(bought the Sudco adj screw-3/8 turns out), EKP #3. The bike is strong low to mid rpm's, the problem is if you are going slow in first gear say 5-10 mph, then nail it and hold the throttle wide open, there is hesitation & surging & coughing in the upper rpm's in second and third gear. We ride mostly in the 5,500-7,500 foot elevation. The manual doesn't talk about the Main Air Jet or Pilot Air Jet...if I go to a higher Main Air Jet will this cure the surging/hesitation in the upper rpm band? Any suggestions or possible solutions are greatly appreciated.