couple of thoughts I have are the filament diameter take a pair of vineyards AKA calipers measure the filament diameter and a bunch of spots see if you go close to 2 mm cuz that could cause it to jam I’ve had it happen before thinking my printer was messed up but it was just filament diameter sometimes it gets really thin and if you have dual bone gear extruder it won’t even grab it if it’s too thin also did you heat tighten your nozzle and heat break together that’s very important could have come loose creating a gap and causing micro plugs
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