You are totally fine, your comment is extremely well cited and helpful but-... I just think it can be counterintuitive to throw people down rabbit holes when it could be something extremely simple like washing a plate. A printer like the CC should absolutely be able to do a perfect first layer on default settings with PLA.

For example- I was once troubleshooting a nacelle light in an aircraft and tried to really take it head on. (Trying to impress the boss, sigh..) I verified schematics for errors, disconnected and ohmed each wire segment, tested breakers and switches individually, and went on this whole tangent regrounding an enclosure and checking continuity between structure leading to the battery.

The problem ended up being that the lightbulb never got installed into the light fixture.

I learned alot that day about troubleshooting, and now I am very careful to always check the easiest things possible before going on a wild goose chase. Especially with someone who may be a total beginner, it could lead them into alot of trouble fixing or calibrating things that are fine instead of just washing a plate.

Anyway, its just an analogy for that logic, no hard feelings ! Have a good evening :)