Camper still a slammer on bumps

Had a friend complain of rough ride in his class C. I rode with him and agreeded it rode terrible over bumps. The whole rig shook, shuddered and seemed to just hammer over the bumps. Checked the air pressure in the air bags and instead of getting a pressure reading, got water out of the valve stem line! After some inspection the air shock was loaded with water from his compressor, instead of air. He never drained the compressor and it had about a gallon in the tank. Blew out the shocks and lines and drove the rig again. Much, much better, the rear air shocks were like solid rods instead of shock absorbers when filled with water. Something to at least check before blaming the shocks.