Want to save your original, rare as hens teeth, beautiful R exhaust, after the rust demons have had their fun? Then read on. Nothing I have done myself and I can take no credit for any of this work. Just found it on the web. The photos show what a talented Japanese R enthusiast managed to achieve to overcome this issue. No words, photos tell it all I think.
This post shows the repairs done to the most common failure point. The next post shows repairs carried out on the next most common failure point further down the silencer.