I have a Flashforge and cannot get the left extruder to work for the life of me. I have tried changing the Gcode etc. It appears I am not the only one. It starts, preheats etc, then when it it ready to print it just stops and sits there with either 8% or 0% showing. From what I understand (I just purchased this). Its pretty frustrating I purchased this because I was really tired of futzing around with gcode etc... It would at least be something if I could dump the code ans see what is happening, then I could fix it or make a workaround.