I am inheriting a 77 yellow motobecane. It has rust on the tank and hasn't been used for 5 yrs. Any help is appreciated on what steps to use to get it back running. I know that there are no keys included. Will it run without a key? Someone suggested por 15 for the rust but can I get that locally?[auto supply,home depot]?, I am planning to de rust the tank[need suggestion]. clean the carb[need what to watch out for for this model]. And replace fuel line and a new plug[what plug?} Thanks to all and be gentle. This is my first post.