I was told on some fuel tanks, the emblem is held on by screws. I don't know if that's true, but I did order the correct locking tabs from my fuel tank emblem. Having said that, the 550Four emblems on the side covers have the same plastic stud-type fasteners, and on the back side, there were what looked like star lock-washers that just pressed on. When you look up the part number for those in the IPC, searching that part number shows what appears to be a flat tinnerman (used for screws), not a star washer type thingie. Is that correct? I'm posting pics to show what came off, and what the IPC part number search brought up. Help please!!!