Hi my name is Tom. I'm restoring a custom 1974 CB750K4 with lots of dirty dull aged hardware. Does anyone know of and economical way of restoring the finish on the OEM nuts and bolts without sourcing new hardware? Does anyone know of a good source for metric, JIS (Japanese Industrial Standard) threaded fasteners? I have been looking at DIY zinc plating set ups but to do it right I'm not sure I want to spend the $500+ on something I probably only use once. Any suggestions out there?