Ok, I'll post a photo tomorrow.
I did the basic setting on a level ground and no load in the back.
Before that, I had the bending function to off (not ticked in the MFD) and during the setting it popped up an error regarding the AFS..... I was in the basic settings at the time but pressed the ON/OFF/... button then the bending function was enabled itself I saw in the menu.
Did this play any role in the basic settings?
I pressed lots of time the ON/OFF/... button as I was not sure if I had to leave the menu when "position learned" screen or when it was "Off" (terminate and close procedure)...? so it seemed I did the basic settings buttons 2-3 times...
Yes, the projectors do the startup with no faults but they return to a position looking higher.
I think I can get tomerrow to an electrician and adjust with a Bosch beam leveler?