

Aside from adhesion itself, maybe that specific filament is (also) underextruding?
I have has a batch of 1.75mm filament that was actually something like 1.6ish. I tried to have it stick, but nothing worked because it simply wasn’t extruding enough.
I eventually measured it with calipers, set that in the slicer and then it started worked fine.
Similarly, maybe your .2mm nozzle has a partial clog?
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