I have had experiance with 3D printers in the past and have never seen this problem. What seems to happen is that when I am getting ready for a print some filament seeps through the nozzle and ball up before the print can start. This effects the beginning of the print and causes it not mess with the shape and connection with the print bed. I’m using the recommended temperatures for the extruder and print bed for PLA 1.75mm. Is there something I’m just missing?