anybody have a rough rule of thumb for variance between the pilot jet and the main jet on a keihin 46mm butterfly carb. above 2000 the engine is fantastic. below that it's an entirely different story. it was fine until a carb cleaning and while the carb was apart on the work bench, my granddaughter decided to clean the work area by putting all the jets, O-rings and screws back into my assortment boxes. I just can't seem to get the pilot jetting right.