I never have seen a damaged R-22. They are either flyable or destroyed, dont think you can damage them.....
Enough already.
Why dont you go to the Robinson Website and drop them an email. Someone there should be able to help, albeit they want to sell new ones.
Another source for you would be to use the Search Engine Copernic. (www.copernic.com) download the free site Copernic Basic. Its a great site. Once installed, and its not large, use it to shop for Robinsons. I just tried it and came up with a ton of sites.
Good Luck