[prairieschooner]

Tuga,
On our '82 the lower end of the Linkage has a few holes to allow for adjusting the ride height. If yours doesn't have this maybe you could simply modify the Linkage between the Axle Mount and the Leveling Valve. If you want a picture I can send one next time that I get to the coach or better still maybe Clarke can take a picture of his and post it (the '82s should be similar)

When we purchased our '82 the left rear would not come to ride height, some of you may remember (Tom and Michael were very helpful).
Newell did not have a schematic for the pneumatic system so I had to draw my own. At any rate the problem was the Linkage Arm. The Linkage at the Axle Mount was damaged and Lower Bushing was missing. I played Mr. Blacksmith to reshape the Linkage Arm and used a piece of Gasoline Fuel Hose for the Bushing as a temporary repair but after 3 years of service it is as good as the other side.