Ok guys here is my problem, when the bike is cold(not run for a few days) it will crank over great, it is getting fuel, has spark, carbs clean, air filter is clean, battery is in good shape (new battery), valves have been adjusted. When it cranks over for a bit it starts slightly popping thru the carbs, but no start.If i hook up jumper cables to my truck it starts instantly then no problems for the rest of the day, it will even start fine the next day. It also has new UP boots. I am sure the are no air leaks. It also runs like a raped ape once its started. A few specs about it are- full gytr exhaust, rev max cdi,open airbox with k&n. Any help would be great.