I've noticed when swinging my monitor to the left/right (on the stand) that the round part of the stand which attaches to the back of monitor (center circle) is pulling away slightly on both sides giving a loose feeling. You can see the round part of the stand pull away slightly from the monitor as you pull the screen to swing it. Can anyone see what their monitor does? I'm not sure whether this is normal if whether I might not have the stand secured properly to the screen??