I've read so many posts on this and they seem to say clean the carb. Well, I've had the carb off 3 times and cleaned it. Taken every jet out, cleaned all the pathways. I never did see anything clogged. Bike still will not idle w/o being choked. It also backfires at a constant throttle. This all happened after sitting over the winter. I would think something was clogged, but no signs of it. Also ran SeaFoam through a tank of gas. Same result. Not sure where to go next??