So all owners that have had problems with brake rotors, go ahead and call NHTSA. I think you will find that there has been no recall to date because there is no specific brake problem with the Diamante. But I rather see owners doing something proactively than just complaining. I have written an extensive online article about brake pulsation and offered to work with any mechanically inclined owner in diagnosing the problem. So far all I have read are owner complaints, but no reall productive owner action to solve the problem. If enough owners call NHTSA, they will be prompted to investigate. That can't hurt. Information is the first step in finding a solution.
For those that missed it, the brake article is at http://www.geocities.com/diamanteowner/article2.htm