We would have put leveling blocks under the wheels and wooden blocks under the levelers so that everything was touching the ground.
Last week we had a similar problem. What made it worse was in part of the site the dirt was really, really soft. Our jack on that side sank 6 inches into the ground. Seems someone had dug a trench to level out their RV and just fluffed some dirt over it when they left. It wouldn't have been much of a problem except it rained. One jack sank but the rest didn't. We could hear the frame groaning under the shift so we had to re-level to ensure we didn't torque our frame. When we left, we marked the hole so the next person had a chance to avoid it.