If you drop the trailer and the air leaks off and the bags deflate, the geometry pushes the trailer forward. You will notice the rear of the outer tube is bent back. Eventually the leg will not retract in the last 4" and will crank hard  and ultimately fail. This is our experience on 2 or 3 Wilson Commanders and a couple of loaded Transcraft flatbed pipe trailers and 1 transcraft step deck. We ever bought decals and put them on the trailers but no one pays attention. New drivers seem to get "experienced" after it happens to them.  Just our history, just trying to save you some grief.