08 kx450f Since the needle goes into the 'main nozzle' which has fuel passing through it from the main jet, wouldn't the main jet size possibly affect partially open throttle? Kawasaki 'team green' suggests a mainjet change from 175 to 180. My issue with lean condition off idle (barely above idle, but not at idle) could be related to the needle taper, as pilot changes do nothing. So, if I put in the bigger main, might that not make some change to that off-idle condition? I'm going to try it, then try a needle with a narrower shaft (richer) too.