- Irregular lines in the mainscan direction. Frequency and thickness is inconsistent.
- Carriage ball nut setscrews are loose.
In this example, the calibration strips were set to be 15 mm in the subscan direction, but they vary from 14-17 mm.

This example shows a ThermoFlex platesetter ball nut. All three setscrews are loose (only two are visible in this photo).

This example shows a Trendsetter platesetter ball nut setscrew.

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