I'll have to agree that with the chevy chassis, there is not much motion caused by walking around inside the unit. At first we thought this was going to be a concern, but it is not really bothersome. As for leveling the unit, we now use the Lynx blocks. Started with wood 2x8's and that just did not work, safety issue, if blocks were not attached to one another they have a tendency to slip. Bought one 10pc set of Lynx blocks and were given a second set. These are really easy to use.
We took our first extended trip at the end of September to Niagara Falls (Ontario) for a week. The unit performed as advertised and mileage averaged 13mpg for 1200 miles.
Paul & Gail
2004 Trail Lite 213
Chevy 6.0