X axis ringing question

[Roberts_Clif]

My Opinion;

1st
I would look at the Z-Axis coupler's to see if they spin true. (see if they wobble when they turn) this occurs because of the location of the tightening screws and the slack between lead-screw and coupler.
I wrapped a single layer of electricians tape on the bottom of the Lead-screw then push the lead-screws into the coupler's, cutting all extruding tape and removing excess tape for looks.

2nd
I would carefully look at your slicer's settings, as it appears to be missing small parts around the holes top and bottom.

3rd
I would inspect your filament / filament temperature / layer speed / some layers seem to have under extruded areas.
This could be as simple as the filament tangling while unwinding from the spool during print causing the under extruding.
This happens more on smaller filament spool sizes and some manufactures.