On my unit the first thing I do is release the air bag pressure, lower the jacks, extend the slides. When leaving, start mh, pull slides in while the pressure is building in the airbags then retract my levelers. Of course since they are Power Gear I never know if they are going to work.
Jim with Judy
2017 Newmar Ventana 4369, 2005 Jeep Wrangler (Rock Crawler), 2016 Jeep Wrangler (Mall Crawler)