Bought the jinxed eibach spacers off Danny350z today.Set too on fitment of them on one of the front wheels first.They are the system 6 version so i have knocked out the old studs and drawn in the new longer studs, no problem there.Went to push on the spacer over the 5 studs but on my disc between 2 of the studs is a bobbin of metal with a small bolt in it and this is stopping the spacer from going on.It is at a different pcd to the spare holes drilled in the eibachs.What purpose does this bobbin serve? is it a disc jacking off point? Can i grind it off so the eibach goes on? Do the rear discs have this same bobbin on them? Waiting in anticipation for the experts to reply. Thanks.