I bought this bike a couple months ago from a guy who said the carburetor is rebuilt and the valves adjusted so it starts in one kick. I let it sit in the garage for about a month or so, and finally took it our for a ride. The bike worked like a charm until the end of the ride (about an hour). It just would not start so I assumed it was out of gas. I filled it up and it started fine so I thought nothing of it. Now all of a sudden the bike will barely start (only if I twist the throttle), idles harshly with the choke out and dies the second I press it in. I cleaned the carburetor, and made sure nothing was stuck in the jets, and it solved nothing. I don't understand what it could be or why it broke considering how short I rode it and didn't even drop it.