WOW - yours was really dragging! How about some after pictures? If you look in the build manual, they have builder fiberglass in the upper added fiberglass heat shield which I think adds support. Did you add some metal pieces to cantilever the heavy rear fiberglass? Check your front too - there is a brace just forward of the gas tank that builder often leave out as well as the fiberglassed in front inner wheels mud shields (which add support).
