I recently was given a FourSevens Atom AA flashlight, which I intended to use for EDC purposes. I have had two FS lights before, and have never been less than impressed with their quality/fit and finish. However, my Atom seems quite different. The threads are extremely loose, with the head exhibiting a great deal of forward and back play. This leads to the light flickering almost constantly, sometimes turning off and on when jostled around. Obviously, this are poor features for an EDC light. Did I get a lemon, or is this an issue common to this kind of light? Rather frustrated.