I have had an issue with the dually fenders on my truck, first the rears. Took it to the dealer, all the body shop did was raise and tighten them, basically hiding the scratched paint from the rubbing. Now I notice the front fender flares(big on the F-450 pickup) are doing the same. So since my 36 month warranty will expire in two months I will soon schedule to take the truck back to the dealer. I want the paint fixed and the fenders secured correctly. It really shows up on the Dark Stone Metallic paint since the underlying finish is white. Bit frustrating but I will ensure they do the repairs correctly and just not hide the damage. If you have dually fenders keep an eye out for them to become loose, temperature fluctuations seem to cause the plastic to expand/contract quite a bit adding to the abrasion. Anybody else deal with this problem?