Dead in the water on the traffic cone volcano dual test. The filament won't even feed into the 0.6mm head. The filament just keeps still, despite the attempts of the hobbled gear. It's as if the heatbreak has filament in it too high up, possibly the result of earlier dual printing and then re-assembly. Worse that that, in attempts to fix it, a piece of filament slammed into one of the heat sink fans and tore off a fan blade. Now it rattles and is the noisiest item on the machine. For anyone else who's removed the metal extruder parts a few times, and as a result, have taken the fan off the heatsinks more than once, have you also found that the blue snap-on plastic has become incredibly loose?