I tried to replace mine, the old one had been snapped off in the pivot hole.
After getting the old bit out by going behind the badge, and losing the tiny circlip thing and the equally tiny spring in the boot skin i tried to replace them with the new bits. It's a complete nightmare if you ask me. Ages i spent with a magnetized extendable screwdriver thingy. Anyway, i gave up and ended up just using the badge bit and 'securing it' by wrapping the bit that goes in the hole in fabric tape, holds it in place quite tightly. At least if anyone tries to nick it, it'll come out relatively easily anyway, and it still pivots, sort of. I'd be very interested to hear of any solutions too! Best bet, get hold of that guy from the X-files. Or the Monkey-boy-octopus-mechanic! LOL, nice one.