Levelling just got better! The fix for the levelling error is in GitHub and my single test was very good.
I use clean glass for PLA and PETG and if I am having trouble with adhesion I use Magigoo. I dont have an enclosure and little need of ABS - is just too hard, all ways! Magigoo do a special high temp version for it that I have not tried.
Potential Issue with Bed levelling process - #41 by stewl