It has been suggested, and shown, that after the initial printing of the 20mm block, that you print "3dbenchy" to test just about everything that you would want a 3d printer to do. That is what I am lead to believe. Every layer is in register, no gaps, minimal stringers.
Time to look for external filament spool holders and do a full bed test.
""The world is full of obvious things which nobody by any chance ever observes…""
— Arthur Conan Doyle
“The Hound of the Baskervilles”
""Mathematics...
