It is not the shutter that bounces, it is the Spyder. That can make the edge of the beam which is cut off by the shutter bounce in and out od the viewers's line of sight. The fix is to run high beams in the daytime, to project a wider beam that remains in sight continuously, and to aim the headlights properly. On low beams the cutoff should not shine high enough to shine into the eyes of oncoming traffic. The bea,s are supposed to illuminate the roadway, not potlight other drivers. The effect of the projector beams and the cutoff from the shutters takes some getting used to. Because the low beams don't illuminate everything in sight, some owners think they aren't working well. In truth, they light the road better than most motorcycles, just not the surrounding area.