Our 32' Class C had 2 slides, one of which had the kids' bunks. Our Greyhawk did not come with levelers and it would have side to side movement when the kids moved around in the bunk or when someone stepped into or out of the Motorhome. We purchased a set of
stabilizers made by Camco. I first used them on the frame of the Motorhome and they had no effect. I then moved them to the corners of the body of the Motorhome and that made a huge difference.
I think with our Motorhome, it was the slides on opposite sides that caused most of the rocking. We really only had side to side rocking. I don't think auto-levelers would have helped much in our case.
-Michael