I posted this once before, but time to do it again. We had the Level-up system retrofitted to our Montana by TrailAir at the TrailAir Factory in Goshen (this was prior to TrailAir selling out/being bought out by Lippert). We used the Montana alot on all types of surfaces without anything under the jack pads and never experienced the popping. Now we did have a leaking jack that was replaced under warranty and the replacement leaked worse than the original, so it to got replaced then no leaks. Last April we traded in our trusty Monty for our RW. We do experience the jack popping off and on. We hadn't been having the problem till just recently I pulled the back jacks up part way and did a re-level, now they're popping on a regular schedule, in the AM when the Sun starts hitting them, then in the PM after the Sun goes down and the temps start to drop. Guess I need to bring them all up and cycle a couple of times, but we'll be moving in a couple of weeks, so we put up with it for the time being. We love our RW and have had minimal problems (did have the washer drain issue), but to date we haven't been to any service center anywhere. Do have an appointment to get one jack replaced and have our yearly inspection done. Well be done at Copley's RV in Hobe Sound, just South of where we in Fort Pierce, FL.