My Father-in-Law bought a new Grand Design fifth wheel last summer. I had mentioned to him last year when it got put away that I thought the springs were flat and not heavy enough for the weight of the RV. So in February he pulls it out to go to Arizona and I remind him of this. He stops at the dealer and has them look it over and they agree it has an issue. Down in Tucson they replaced the spring with heavier ones. It now sits like it should and tows much better.
So now that it tows better it needs to stop better. He has complained that the brakes just aren't strong enough so I told him to upgrade to disk brakes. He ordered the parts and our maintenance guy from work is out there putting them on now. I wish I had pictures, but the rear axle seals were leaking. The passenger side rear axle brake never worked, it is filled with grease and no brake dust at all. The driver side rear axle brake was also filled with grease, but had a little brake dust so maybe it worked for a short time. The front axle brakes were almost worn down to the metal on the shoes. Keep in mind, this has maybe 5-6,000 miles on it.
Good old Lippert frame and axles. What a pile o crap.