Upon inspecting the underneath of our 2003 2720SL, I was surprised to see the extent of rust and flaking paint on underfloor frame crossmembers and torsion bars. We live 30 miles from the ocean but bought our TM on Cape Cod. I know salt air could be a culprit but suspect poor quality paint or preparation at the factory is more likely. Are there any out there with similar rust or an opinion on how to deal with it. I'm thinking I have to sand, paint, and/or use spray undercoating - looks like quite a job.