Yes you will need a special tool. Mine hooks to the bottom of the fork from 1 end then the other end will hook to the 2 holes in the spacer you talk about. Then there is a bolt through the whole tool that you can tighten and it will compress the spring enough to take the cap loose from the rod. Make sure you count the number of rebound clicks before you take cap off of rod because it needs to be timed back on the rod correctly.
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