My jacks went berserk on our first trip out. Since then, I've noticed that the Lippert jacks seem to forget what level is. You can reset the system level setting by following the instructions in the Lippert owner's manual, but I don't trust it and manually level using an old-fashioned spirit level resting on the floor. The jacks work well; auto-level not so much.
Lippert has really excellent manuals for the various components that Thor uses. Their site is
Welcome to Lippert Customer Service Thor should include all these manuals in the Owner's bag that comes with the coach.
Thor Forums
