I have ordered new springs. I have not and have never changed any extrusion settings. Has been printing fine for a month. Last print I noticed a slight lift on a couple on a corner of a first layers. Ender3v2 hw 4.22 marlin firmware ENDER PLA Ultimaker Cura slicer. Settings unchanged from day one. All the same ingredients up until now. I have spent half the day levelling. Same issue. Bed temp reporting ok.