can someone give me a complete list of each Engine Letter and what they mean.... For Top End and Cylinder and Carb? ....and the mile Letter marked on the front of the frame.....and the piston has markings on the inside wall--means anything?
I also notice that the piston isn't symetrical looking on the inside...there are parts with metal bulges- probably for weight-- Motobecane pistons aren't directional are they?? you can install them facing either way??
Thanks some more