im trying out sunlu petg for the first time and its a fucking nightmare with stringing. retraction tower test in orcaslicer has identical stringing everywhere from 0 to 8mm retraction length. my purge line also has pockmarks in it, but it doesnt look like wet filament; my dfyer is reading it as 19% humidity in its chamber. im gonna try a cold pull to see if there might be any pla stuck in the nozzle thats affecting it, but id imagine that the billion calibration prints would have cleared anythi…