At the risk to repeat myself...

If you can't find in US from dealers, ebay, Japanese Vintage Motorcycle Parts | Motorcycle Parts, Bike Accessories & Motorcycle Apparel For Honda, Kawasaki, Suzuki & Yamaha- Old Bike Barn , Out West Motorcycles, Parts for classic and vintage motorcycles or Motorcycle Parts, Motorcycle Accessories ? BikeBandit.com for instance , you may try Vintage Honda parts specialists overseas like:

David Silver Spares - HOME (UK)
Honda Motorcycle Parts, Kawasaki, Suzuki and Yamaha Motorcycle Parts - ATV, Classic Bike, Dirt Bike Parts (Netherland)

I've ordered parts from all of them without problems

I hope it helps another vintage Honda lover

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There is nothing like riding a Honda MC !