So I just picked up a fixer upper from a guy up in PA. He says he left it outside for 4 months, I heard these engines were mostly Aluminium so it shouldn't be a problem right? The rest of the bike isn't to good. There are some spots here and there on the engine like the clutch rod and the head nuts and the clutch and magneto cover screws are rusted but it should still fire up right? Don't be afraid to be blunt, is it worth trying to fix or not?