Perform Precision Belt Tensioning and Gantry Alignment

1. Disable the printer motors via the LCD menu (Control > Disable Motors) to allow free movement of the printhead.

2. Perform the 'Squeeze' test by gently pressing the gantry against the corner printed parts on both the left and right sides to identify which belt lacks tension.

3. Use a frequency tuner app to measure the belt resonance, aiming for the manufacturer-recommended target of 78 Hz to 85 Hz.

4. Adjust the tensioning screws in small increments of less than 0.5 turns, cycling the X-axis carriage manually after each adjustment to ensure the tension distributes evenly across the belt path.

5. Verify that the X-axis gantry remains perfectly parallel to the frame throughout its full range of motion to confirm the imbalance is resolved.

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