Problem, Bike starts terrible, once running it runs ok, but backfires when you let off throttle. Electric start, forget about it. 30 kicks, not unusual. History, Bike new, runs start great. Trailer to race 6 hours away, runs like crap, had to run choke whole race. (still finished 5th in . Took it to local Honda dealer because I was off to Colorado in weeks. They say they have it running great. Wrong. Runs the same or worse. On a picnic table in Colorado a friends starts to disassemble my carb only to find no air screw. Buy air screw and bike runs much better, but has got consistantly worse at starting and running and better at backfiring. Have spent over $500.00 at honda shop and it is no better. Shoot either in carb, starts at any time. I feel it is then in the carb. What say you. I know this is thumper talk but I came from a CR250 that was a one kicker, it is looking better and better. Very frustrated and need a base line to start from.