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I just got a anet A2 3D printer and i am having pigtail clogging issues in the heat sinc above the heating element on the nozzle, when i go to print the print starts normal but when it gets to the second or third layer it will stop extruding plastic, and the filament will be pig tailed in the heat sinc are that i described earlier. if you no how to stop tis please let me now cause i would realy like to start printing with it.