Have you replaced the standard leave-rear-feather with one of mid-americas ? I've read a test about them, doesn't remember if it was in vette magazine or corvette fever, but they received a much better result then the originals. On my vette i have to do some work on the frame. The one and only part who can rust, does. A friend of mine makes me 4mm thick lower frame-sections which i would weld in (first the rust must be removed). SHARKEY