Hi all,
to my opinion there is a mistake in the manual levelling routine, which only appears, when someone levels manually the UM3 and has to read the description in german.
During the second levelling round, leveling the first point , one is supposed to ajust the hight with the (back) screw under the buildplate. - To read the whole text in german one has to scroll with the scrollwheel. (the english text is shorter, so it doesn become obvious there ) - the printbed hight is (in this step only) sensitive to the scrollwheel! - That means , if a user reads what to do, he changes the hight of the printbed, which he had set in the first round. This leads to a wrong levelling.
Am I wrong?
Best - Yvonne
(Before anyone asks ... of course I work with the latest firmware. And I was able to check that on many different UM3s)