Load leveling just disguises an out of balance trailer setup. A properly set WDH will result in level towing where by both suspensions depress equally. Load leveling just cranks up the rear so it looks level but not an ounce is removed from the rear axle and distributed to the front axle (and back to the trailer axles).
Great for a load of bricks or your porcine friends in the cargo area. But doesn't remove an once of weight in this case either.
Set the WDH with this turned off and you'll be fine. It can take out the last 1/4 inch when hooked up to the trailer.
-- Chuck
Dude I'm aware of this!!!!! Me and you have gone back and forth 100 times on here about WDH's and travel trailers etc etc etc. Whether its a trailer hooked up or a load of bricks in the rear, sag is sag and a load leveling suspension will help. Even with a properly setup WDH the LLS is still of benefit.