Hi Johndvm,
Welcome to the forum. I can't answer your questions about the Overlander but we used to have a member that had one. It was the dressing room for Andy Griffith when he was playing Matlock. The only problem I remember is the windshield would pop our slightly when he put the jacks down but that has happened to a lot of different brand coaches. Must use the jacks properly.
Hope someone here might have further information.