Vibrates and wobbles horribly. And yes, assembly is correct and desk is level. Desk's top is so thin that a normal key stroke on a normal non mechanical keyboard causes my monitors to shake whether they are on stands or arms. Would return if I could but I might just put it outside with a "free desk" sign, because I will end up spending so much extra on cross braces and rubber to secure and dampen it so it is usable.