I am having such a hard time getting petg figured out. for the right extrusion/ temp settings etc. I don't mind the strings but small prints I am wondering if I need a print fan because it is not working, and the first layer seems to have issues sticking, which is really odd as I have a sheet of PEI, However my first print with PETG, I printed at ABS temps, and ran into some issue, and had to pry the print off, which might have messed up the pei, and I am wondering if it warped my glass-cork-wood bed.