Posting in old thread i know. I have a set i found that the washer trick works and the bounce can be fixed with using a rubber washer between the two metal ones reduces bounce significantly. Only problem i have with them is i live in a cold climate and i was doin reg maint to the car inside a garage and when i went out side and closed the hood the mounts that attach to the fram snapped due to the spyder projectors using cheap plastic. fixed them by cutting them off and using zip ties to make them real snug and since the car is black can hardly see them when the hood is open. other than that i wasnt in the group buy but i did pay 350 for em