My wr400-99 runs great in the bush but then I ride it on the road for 10 minute or more it developes a miss. But when I get back into the bush it clears up & disapears. The jetting is fabulous for the bush but i think that it might be too rich for the road. The jetting is 168mj, 200maj, emm# 5, 38pj, 65paj, I am only useing half throttle on the road. Any idears?