I own multiple Ender 3 Pros. All of them including this one has printed fine for the last six months. A few months ago I tested a large .8 mm nozzle and also switched to PEI bed. Now one of the printers always prints the first few layers garbled then it prints fine for the rest of the print.

I’ve tried everything I can think of. Does anyone know what might be causing it or where I should look to troubleshoot?

My first place to investigate was that it has something to do with me raising and lowering the bed when I change surfaces. I’m using a standard nozzle. Obviously something I did change the prints and I can’t figure out what it is.

Maybe my bed is too warm? I’ve tried changing the filament thinking maybe it sat out collecting moister but no dice.

https://imgur.com/gallery/A31VHSr