My printer is far from being properly calibrated. I've been having problems for a while with the bed sensor and the PEI strip is due for replacement. The printer is 3 years old and since then the world of 3D printing has advanced a lot. I hope to have a new one by the end of the year. In the meantime, we will continue to struggle with this one. I'm printing parts, trying to avoid visible faces against the bed. That's why I'm using a lot of supports and it's a nightmare to remove them properly. I also got a z-jump! I'll improvise to make it as cool as possible.