jackie curtis

We are cleaning, installing new flooring and carpet, recovering cornices, refinishing dining table and chairs for our 2002 29 ft classic hilo. We traveled from WA to Kentucky to get it and are almost done with the fixes. We will order new bulb sealer next. We have read info from the forum and are learning new things all the time. We are still confused about why the the front/back (top)of the trailer sags about 1.5" below the bottom portion. The cental portion between the guides and cables is just fine. Can anyone explain the fix for this? Thanks for your help. Jackie