Nozzle "Scuffing" print as it works?

Bambu Lab P1 Series Troubleshooting
1

Machine: P1S-Combo
Machine Firmware: 01.05.02
Bambu Studio Version: 1.9.1.66

Filament: Generic PETG Black

After successfully completing a PETG R&D print this morning I can see what seems to be “scuff” marks on the print. It looks like the nozzle has been brushing past the print before starting to print somewhere else. These scuff marks appear at pretty much opposite sides from one another and I was hoping someone might know what’s going on here. Better still, if anyone knows how to stop it happening?

This-one
This-one768×1020 135 KB

This-One-Two
This-One-Two768×1020 130 KB

2

Looks like an extrusion problem to me.
Usually appears if the extrusion rate is too low.
Check your k-factor and if fine try to slightly change your flow rate to see whether or not it changes the issue.

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