For the heet creep use a good cooling paste on the nozzle. I have used the stuff creality send with the printer after 100/150 hours printing i was getting problems and errors like hottend unexpected temperatuur. Then i repaste the nozzle with some old already open tube artic silver 5 i used for some cpu an gpu in the past. That really helped no errors better constant nozzle temp. I dont have looked for the specs of the artic silver 5 it works that only matters for me.
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