I have been trying to get my friends Lt 80 fixed. It is hard to start when cold. I cleaned the carb and everything seems clean and the choke appears to work. It will fire off with the choke on and die after about 3 seconds. If you take the carb boot off and choke it with your hand to keep it running then once its going its fine and runs like a champ. If it sits for a few hours then it wont start again. I'm going to take the carb off my daughters LT and try that next. Could this carb be junk? If it needs a new one should I put a new stock one on it or upgrade to something else?