The plastic follower sits below level of the rack casing threaded hole, so can't be seen when in-situ even if using a ramp. If you stick your finger in the hole after removing adjuster you can feel it though

With a pair of small curved blunt nose pliers I found it can be lightly gripped and lifted out easily. When re-inserting ensure it's slot is engaged with rack. If it's just slightly proud of casing it's not.