x2 on the comment about not using the jacks to level the truck. Most folks take the jacks off when traveling. Catching one on a rock or tree root could serious damage to the camper. We have never found the rocking of the truck to be a problem. We use the yellow plastic leveling blocks to level the truck. I have small bubble level gauges attached to the camper at the drivers front corner. Over time I have learned how many blocks are needed where to move the bubbles to level, side to side and front to back. Easy.