So here's where I stand now. I have spark, I have gas, but no fire. The tube from the carb to the engine is cracked, but it barely leaks at all. When I twist the throttle, it has a more muffled sound when I kick it than when I kick it with no throttle. I know I don't have the carb adjusted right, but it should at least be firing right? I have no smoke coming out the exhaust.