OK, this may be a foolish first question, but here goes. What is the proper screw / bolt to mount a license plate on a 2006 R1200RT? The screws that are currently being used on my new (to me) bike appear to be sheet metal screws. I somehow doubt that BMW would use just regular old Phillips head sheet metal screws. I tried looking on the microfiche but couldn't find them listed. I would like to get some security type screws (I have a disability plate on the bike) but I need to know what the correct screw / bolt is first.