so I just bought the Otterbox Defender for my Atrix 4G, and for some reason, on the top left corner, if I squeeze it, I feel a little give, of maybe like half a millimeter, but IDK if that means its defective or what? Also, whats a good way to clean a screen cloth to get the dust off? I love this thing, and my screen is very clean but there is like one or two small specks of dust I cannot stand looking at.