One more Thing. If you want to simplify leveling, check out levelmate pro. After you set it up for your rig, the app will provide a picture with each corner and how many inches each is high or low. Works with levelers and manual leveling. Leveling now is very simple. I even set it up to allow for the 1/4 inch change when the slide is out.
https://logicbluetech.com/levelmatepro/
Good luck and safe travels.