putting my crf back together with a JE 13.5 piston, Kibblewhite 1mm. over intakes , RHC 187 cam and Yosh. rs-3 pipe, carb is bored to 42mm head is ported for the valves and matched to the carb. Burned I know your CRF makes great power and nice curve any ideas where to start on jetting? I'm in central illinois arond 500 ft. I believe. It's in the 90's most of the time and we haven't seen moisture in months. I run a straight intake tube to a K&N filter but I don't think it's the best setup for air flow. My bikes an '02 stock airbox out of the question.How's the '05 boot flow? will it work on my '02 box?