I am new to this forum but have been working on the early Honda 4's for a number of years. (Just got a 1966 Dream). About 5 years ago I started a small retirement business called NoChrome that specializes in polishing aluminum parts from vintage motorcycles. I am near Ausitin, Texas and do mostly local stuff but if you need small parts polished or help doing your own polishing I am glad to help.
I don't do this as a money making venture but primarily to keep busy and pay for materials. I see lots of old, badly oxidized parts. There is no easy way to make these shiny except lots of labor. Call or email if I can be of help. The pictures are from current "work in progress"
Thanks - Don
Nochrome@aol.com
830-385-4136