I just stumbled over a Homelite weedeater gas engine and I am guessing that it is 25cc. I would really like to know what I need to do to get it suitable to be an engine for an r/c airplane. It seems like the engine has a plastic backplate on it and some of the gaskets may be a little worn out. The reason that I want to use this engine is because I don't want to spend hundreds of dollars on a gasoline engine when I have this engine that might work in an airplane.