The lever was replaced and never aligned with the centre bolt head of the popup plug. I made this replacement with the hair trap at the bottom instead of the top.
It has a 5.5mm screen thread which is 4mm long. With the hair trap at the bottom, and the full diameter of the hole, the misaligned lever now make the plug move as desired.
Printed in PLA with 3 perimeters.
Added a new version with more support around the screw thread. The metal shaft is 8mm in diameter.
The author marked this model as their own original creation.