Similar issue as what I have after printing fine for few months. Why this model can cause nozzle block and print in air
Having a thought if it is extruder spring tension problem? My extruder default spring tension seems to be at maximum point the first time I open the extruder (Same to everyone?). i.e. the screw pushes the spring has been set to the tightest point and making spring very ‘squeezed’. Since this tension setting was working fine from the time I got my P1S for few months, printed PLA, ABS, ASA, PETG and didn’t have issue so I wasn’t doubt about it.