Hello, (Im' quite new in the 3D printing world ) I have the same problem here. The printer was working (very) well and suddenly, the first layer has impressive inconsistencies: on one side, the head is to close from the bed, and on the other side, the head is really too far, and thus the PLA does not hang on the bed. I have tried multiple bed leveling, when bed is cold, when bed is hot... Bed lby fruityfred - Delta Machines