Just got back from a trip with my trailer, about 800 miles. I was taking a look around the truck today and noticed that the paint on the diff cover is pealing. Looks like it got hot, I have 3000 miles on the truck a almost all are towing. What are you thoughts, any damage? Mag-hytech cover I guess I need one. Are there any warranty issues once its installed?? Truck towed killer we had some 16% grades both up and down no problems.