Hi Max, the megaphone does have a flat on it, it also has the correct (for 1961) megaphone joint for expansion, non painted oil tank, and perspex screen, the mesh bug screen finished in the '50's...I forget whenNice Dingo, did yourself proud! Not to be picky but shouldn't the megaphone have a flat for helping the lean in a righty, and shouldn't the wind screen be a Bug screen? Nice bikes!!
Max