I already tried searching for this and found no answers. Does your Troy rear back up iron sight wobble at all when locked in the up position? I ordered and received one today, got it mounted on the upper, and when mine is locked in the upper position it has some play in it. It has no side to side play, but can be moved pretty easily by hand by pulling back on it. It moves about a few millimeters and feels "springy". Anyone else's do this or is it normal?