Poor adhesion, gaps between lines, excessive squish, inconsistent height, or first layer varying across the bed.

1. Clean the build surface using a surface-safe method.
2. Verify bed temperature and material profile.
3. Check bed tramming and gantry alignment.
4. Verify probe operation and mesh.
5. Re-check Z offset.
6. Inspect nozzle for partial blockage or damage.
7. Confirm first-layer speed and extrusion settings.

Do not compensate for warped or loose hardware solely by changing slicer flow.