Handling issues 2005 Fleetwood Expedition 34H

We had our revolution aligned several expensive times. One in Missouri they even bent the front axle straight... Finally, at the factory they checked thing out and...the rear axle, right side I think was maybe an inch forward of the other side on the frame. They loosened bot sides aligned the axles perpendicular to the frame and welded in spacers/washers. It steers much much better. That was probably 8 years ago. Also those rubber sway bar links were chewed up. They replaced them.
last week I finally got polyurathane sway bar bushings installed.Shocks contribute greatly to all the handling ills. Had them replaced last week too.
A rear sway bar is next. I thought it had one but it doesn't.