Hi all! DIS-ing from my campsite again on the maiden voyage with our pop-up! Walking around the campground this morning, we noticed a camper with those lego-type leveling blocks under the leveling jacks of their camper. The guy at the camper dealer told us those were supposed to go under the wheels. We didn't buy the lego thingys yet, but we were thinking about getting some. So, are they a good thing and where do you put them -- under the jacks or the wheels? Thanks!