I noticed on the last but one fotosession of B.Possel's restorationproject, the one about the carpets, that there's a small attachement clips screwed on the drivers side crossbeam, thus later-on situated under the driverseat. What is the purpose of this clips as I have the clips but not installed it yet?http://picasaweb.google.com/mercedes280sl/July262008/photo#5227494180533069426