There are all sorts of bits and pieces that You can attach or carry along to HELP!
Realistically unless You bite the bullet and install a proper set of Hydraulic or Electric Jacks ,You are never going to be totally happy .
Even with the Factory Jacks there is some movement and periodic adjustment is required once in a while during Our long term stays.
Whether that is caused by Earth Movement or something Mechanical ,is something that I haven't figured out.
In any event when the Grandkids visit Us ,even in Our Sticks and Bricks there is a whole lot of shaking going on!