Here's a site in Canada that has a lot of good tech help for Viragos.
Here's another Canadian, who's site is called Larry's Cycle Works, and he's got links to tech help at the bottom of his main page. Gotta love those Canuks!
Also, once more, here's Mac McCurdy's Dr. Piston site. He's got Virago tech help too, and knows more about these beasts than anyone else alive, I think!