DRZ 400 w/Mikuni, 3x3, dynojet; clip, jetting, fuel screw are set the Burned way except for the main jet. I've been running a 145mj this winter and it was very good. It's starting to warm up and it still performs very well. Should I go ahead and drop down to a 142.5 for summer? Elevation is 800 ft. Thanks in advance Ed.