The laser lens itself is free and moves in all directions including up and down by electric coils moving the lens. My guess could be that the adjustments on the housing are out of adjustment and you are changing tilt or tangential direction. Either the tilt sensor went bad, the lens movement coils are bad or the laser is just getting weak. You will pay more to get this fixed than the value of the unit.
4/19/14 at 3:02pm