I have a wr450f 04 model and need some help. It's like ignition cut on a given rpm. Bike is completely stock with only 500km on it. This problem has not been there earlier but now it's there all the time. Happens all the way between 70-80 km/h in 4gear and between 85-95 in fifth. Dont know if it is ignition problem or carb. Is it possible that it can be the pilot air?? Thanksful for any idea to solve this problem.