Check while in (only need the front two in - the back two are electrically operated). Also make sure that the leveling jacks are retracted. All 4 leveling Jacks are Hydraulic. When the Berkshire Factory originally filled the Hydraulic Reservoirs, they only filled them half way. The Manufacture (Equalizer Systems) says that the Reservoir needs to be filled within an inch of the top.
Finally completed all State visits in August 2011 with a trip to North Dakota.