My sister's '85 Spree won't start anymore. The same thing happened last year at this time. It only has electric start (don't think it would be a problem if it had a kick). When it gets cold out (maybe even just cool out, below 50ish) it won't start. She stores it in a garage and she can start it in the garage, but then it won't start after class when she tries to come back home. Then after we walked it back to the garage, she could start it after a few hours. Now it won't even start in the garage, this is probably due to the gas going bad. Is there anything we can do, or should i just clean the carb, drain the tank, and wait for spring?