The leveling kit was dealer installed and the tread pattern on the tires is pretty aggressive so I was thinking the same thing. I took it to a camper dealer today and there shop measured but I am not sure they measured wheel well heights. They were focused on the height of the ball and the tongue of the trailer.
I also preload the weight distribution bars and lift the back end up quit a bit before hooking the bars up. Tried the fourth and fifth link. Fourth link feels better than the fifth but it still just doesn't feel right. Seems to be bit light around 50mp and gets better at 55 but just doesn't feel right and you know that is no fun not feeling solid going down the road.