I just bought a '99 Mojave 250. It didn't run great, so I changed the plug and cleaned the carb. I rode it around and it seemed a little better. The next morning it started after a few kicks, idled for a little bit then stalled. Ever since I cannot get it to start! I tried cleaning the carb again, but no luck. It has spark and the carb is getting plenty of gas. How can you tell if the gas is getting to the engine? The plug doesn't seem too wet, but it's not dry either. Please help!