looks like my kind of project!
I think you'll find that Goldys are easy enough to rebuild due to the simple fact of parts availability. If you havent got it, chances are theres someone out there making it brand new.
Im personally of the opinion that this isnt necessarily a good thing, because there are more goldys now than ever - at the cost of swinging-arm iron BSAs (b31/b33).
nevertheless, this being a genuine goldstar i hope you get it back to its former glory.