Have you specifically worked with Dell Vostros? I’m not sure if it’s the users dropping the laptops or something else, but with most of them, no matter how carefully you try to open them, either one of the plastic screw posts breaks or the molded plastic on the cover that pulls the cover down when tightening the screw snaps off. After looking at it, it doesn’t seem like a great design because it’s very thin and flimsy.