As a temporary fix I stuff one of those fan-folded metallic solar windshield deflectors(Wal-Mart $8 thingie) lengthwise under it. It keeps mine from jiggling and gives me a place to stash that thing. Also, my table has a tendency to fly outward when I really get the g-forces going around turns. For this I have a bungee cord hooked to the rear of the stove/sink hatch, bring it over the tabletop, and hook it to the front of the table.

-Tracey