I recently got my Anycubic Vyper. The first few prints were great, but it went downhill quickly. I'm having major issues with adhesion. I've cleaned and leveled the bed (repeatedly). I've tried numerous bed and nozzle temperatures, several Z heights, and done everything I know to no avail. This print is supposed to be a 10 mm circle with a 3 mm hole. This is as good as it gets:Anybody have any thoughts?