this may help some guys that are not sure where this is at.
this is a bbk video they have about installing there long tubes but at about 55 secs into the video you can see the clamps that are the problem they show them taking them off a few seconds later. they have lots of shots of them in the video. the problem is the under the metal flange on them. under that is a guide pin or disk that should be welded onto the stock pipe that has fallen off. that is the rattle. take it out life is good.