Maybe it's more about the quality of the trailer suspension because, even though I read mostly positive reviews here by RK owners, we hated ours. Always something rattling loose. Our pantry shelves had to be repaired/reinforced with plywood from breaking due to canned goods, etc., bouncing around. A broken glass refrigerator shelf we had to replace for the same reason.
I was in the process of researching spending a bunch of money to upgrade the suspension for this very issue when we just decicded to upgrade the whole unit.
Anyway, I can only speak from my personal experience but never again for us.