Hello, I am a proud owner of a beautiful 2008 Yamaha wr450 that i love to death. Coming into the 2014 summer riding season and i have struck a dilemma... Ii have a FMF powercore4 and powerbomb exhaust system. I purchased a JD jet kid over winter along with the exhaust. I live in Michigan, (north of Detroit area) and i cant seem to get my bike running back to normal, i have tryed changing jets provided in the kid to adapt to where i am, around 83 degree, and 700-1000 feet above sea level. I do a lot of street riding because i am street legal but also travel the great state of Michigan to explore trails and just well anywhere... But i am wondering exactly what needle jet to use (blue or red) with the C clip on which position, also which pilot jet and main jet, I am currently on the red needle jet (on 5th slot down from top) with the 165 main jet and the 48 pilot, and i feel i am close just not quite there... PLEASE HELP ME!!!!