I don't know what is going on and I would appreciate some advice from a 3D-Print-Pro!
slicing my stl-file with Cura 4.4.0 and having leveled the build plate of my UM2+ several times,
I'll get this "uneven" first layer that is in certain areas not smooth at all.
I tried cleaning, apply an adhesive and different plate-adhesion methods with the same result.
BIG thanks in advance for pointing me the right direction to get a perfect first layer!