Goldencrazy.......Congrats on your new coach. Take a few minutes and add a description of your coach to your signature, so when you ask questions we know what type of coach you're talking about.
It would also be nice to know what type of jack system you have. On my HWH leveling system, (auto level) once the system has completed auto leveling, it checks that all jacks are touching the ground. If I tweak it after that, it can leave one jack not touching. This destabilizes the coach.
On occasion, you get a campsite that requires you to extend the front or rear quite a bit. The further the jacks are extended, the less stable they are. On those occasions, it might help to put some blocks under the jacks that are being over extended to reduce wobble. Just be careful of lifting the rears off of the ground.