Run the P1S machine calibration after initial setup, a move to another surface, firmware instructions or motion service. Keep the enclosure clear and do not touch the frame while it measures vibration.
Bed leveling belongs at the start of a diagnostic when first-layer height changes across known filament. Clean the nozzle and plate first. A plastic dot under the nozzle can turn a correct machine into a bad measurement.
Flow dynamics and flow-rate tests belong to the filament preset. Use them for a dry third-party material that prints consistently wrong, not for a single dirty-plate failure. Change one calibration layer at a time and keep the original system preset available.
If the printer makes a new mechanical noise or reports a sensor error, stop. Calibration measures the machine; it does not repair damaged hardware.
These routines slot into the broader order described in essential calibration, in the right order, which is worth reading once for the reasoning behind the sequence. If the printer is freshly unpacked, finish the P1S setup steps first, and confirm the first print looks clean before chasing calibration numbers.