Added a PEI plate for my Artillery Genius using bull clips, and after leveling the leveling/adhesion test print comes out like this. Is this just me leveling the bed too close to the nozzle, or is it the pei plate not heating up as much as the original glass bed? It’s at 60c btw
To test this you could heat the bed up for 10 or 15 minutes before starting the print so that the new PEI sheet gets saturated with heat. I don’t think this is your issue though as you can print PLA without a heated bed at all.