I am trying to work out what bits I am missing from the spare wheel mount on the rear bulkhead (behind the truck cab) of my defender 90 pick up (a TDCI 2009 Puma model). I have attached a photo of something called a bracket rubbing (part no MUC1649) and which looks (from the attached drawing) as though it forms part of the mounting kit. Does anyone know if the 'bracket rubbing' is part of the mount? If it is then where abouts does it fit to the remainder of the kit.