I have a 2008 Gulfstream Yellowstone Pusher... 40.8 ft. I use the manual mode all of the time. First, I power up the system. Next, I select manual. When you do this, the system puts all four jacks down... but barely down. Next, using a smallish level, my wife tells me where I'm off, both front to rear and side to side. Using the key pad, I adjust accordingly. Remember, you can go up but not down (atleast on my coach) so if you bring one side up to high, you have to "retract all" and start over. Each coach will have a counter top or fridge top or some location that you know is close to level - use this as a base. If your fridge works good, that is your goal.
Email me if you have any more questions... "
[email protected]"
Good Luck!
Randy