Today someone told me the suspension on our old RV might need work. I was surprised because normally in a car when the suspension is going the ride really changes and there are noises. I had the RV on...
To see if one side is sagging park the MH in a flat parking lot and measure the ride height front and back at the 4 corners, compare those measurements to what the chassis manual says. Is your front end IFS or straight axle?