We have bought several of these wide 3-drawer carts over the last several years and they all have the same two problems. The casters end up breaking off and the cover for the top drawer caves in just slightly over time so that the top drawer begins to hang up when you open or close the drawer. This happens even if you do not set anything on top of the cart. It doesn't seem to matter. It is just a faulty design so over time the cover sags. The over drawers do not have this problem, so the defect is in the design of the cover for the top drawer because it does not matter which drawer is placed on top the problem persists.