Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4970258.

This is made to address the need to drill and mount a rubber grommet to keep seat to moving up and down when adjusting height.

I printed my version at 100%. Never tried at a lower setting, feel free to try lower and let me know how it goes.

https://youtu.be/2fru8PyJ2b8