When I bought my 06 Nav it had the spare wheel in the pick up bed just sitting there. Ive had a look under the truck where its supposed to be stored and theres a chain part which I believe lowers and rainses to secure the wheel but the handbook says there should be a bracket which goes across the bottom of the tyre when its in the stored position for it to be secured properly, problem is I dont see the bracket and im unsure if its been removed or if its just the chain that secures it with no bracket, anyone got an idea?