I've got (possibly) the same issue on my project car - the "chrome" ring on the top of the gear knob has disintegrated over time releasing sharp shards of chromed plastic right into the palm of my gear-changing hand. I break them off when I can but not getting better, just going further around the circle from time to time.. Assume the badge needs replacing. I remember in one of the 6-speed gearbox threads that a badge swap was mentioned (possibly swapping a C5 A6 6-speed badge into a similar leather A2 knob to convert knob from 5 to 6 speed), but can't find it at the moment. Any thoughts?