It looks like your bed is warped. You have a really thin area in the middle there where pressure is building up, further up in the print it looks like there's more room under the nozzle and all that built up pressure is squirting out excess plastic.
What is your first layer height?
I noticed you are based in Stockholm.
We (3DVerkstan) are the official Colorfabb resellers in Sweden and I'd like to help you if possible.
The XT is not available in green yet, might you have the ordinary transparent green?
It sounds/looks like there might be underextrusion if you have the nozzle a little to close, but that's just a theory.
Please give me a call on +46 708 980 985 and I'll see how I can help you.
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