I don't remember what style of pins were in the OBS... if they are the Rivet type.. ie the top and bottom of the pins are rolled outward to keep from slipping, then I would suggest useing a dremel tool and cut away the top or bottom, then force the pin out. I would then take the remains to you local Auto parts store and get as close of a match that you can... with the Idea of you can always cut em shorter.... if the part store is no help, try and locate an auto Body paint and supply, often they will have pins.. nuts and bolt ...