S197 V6

Ok Im not really sure which section this fits in, so mods please move to wherever is appropriate. The metal magnet clip on the side of my passenger seat is extremely loose and is rattling around like crazy. The piece I am talking about is the one that the seatbelt retainer strap clips on too (the little silver magnet piece attached to the plastic part of the seat). Has anyone else had this happen? Or does anyone know how to tighten the darn thing? I cant locate any screws or anything to get it tight again. Thanks!