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  1. The bit in the middle is just a rubber cover to a bolt. Take it off and you should be good to go

  2. It’s a rubber plug for the hex key. Put a small screwdriver to its edge and pry it up like the guy above said.

  3. Go to the bikeshop… Chances are high by tinkering around the headset with no idea how to take a dust cap off can result in serious harm…

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