Been in fire and rescue for over 30 years. Also done all my repair and maintenance on RV ,vehicles,home repair,etc this is jmho I would not be concerned with lifting with leveling system BUT when I had the RV lifted I would install safety Jack's under the RV and then lower the RV to rest on the safety jack with the other points still firmly on the ground. In fire and rescue you never raise any object without some type of safety under it. In the fire service we call it "cribbing". Usually done with heavy timbers. STAY SAFE.
