It’s too expensive to have a major design flaw. The problem is in the connection of the 4 side panels which combine to create 2 wobbly main side supports. What they don’t tell you is that the 2 side supports come in 4 pieces. The channel in which the top fits into the bottom is WAY too shallow. If the posts of the top piece were longer & the channels of the bottom piece were deeper, the centers of each side panel wouldn’t bend like they do. And of course, in a perfect world each side panel would come completely solid & you wouldn’t have to assemble them.