Had a nightmare with the one on the left last year. I'd followed instructions on how to remove but the middle wedge wouldn't budge and had to cut it out of the steerer with a junior hacksaw blade taped to a screwdriver...
Out of interest, what's the best way to remove one of these? I tried using a punch to leverage it free and I also tried a large allen bolt, bolted in to to a rotor truing tool. I think my steerer tube not being perfectly round also didn't help the situation.
Had a nightmare with the one on the left last year. I'd followed instructions on how to remove but the middle wedge wouldn't budge and had to cut it out of the steerer with a junior hacksaw blade taped to a screwdriver...