First layer issue

[drindt 0]

Hello,

i got a new UM2+, have levelled it as usual this is my 4. printer. But i experience issues in the first layer. The first lines going on glass are look perfectly but after a while it looks like overextrusion. Also the material lifts up on some places. I have levelled the bed dozen of times cold, warm. I don't get rid of the problem. Please take a look at the photos i have taken. Those represent a freshly created Brim.

Thank you a lot.

Daniel

[drindt 0]

BTW i should say that following layers are looking ok so far. I am not sure if this is an extrusion issue in general.