I just build my Huxley all works well accept the Heatbed and Extruder. I test the extruder by sending M302 to allow cold extrusion, however it does not return any thing back it just reads "M302 sending", after this i type G1 E5 F200, and it too returns nothing, all i can see in the box is Sending. The same goes when i send the command to return Bed and Nozzle Temperature. Any Ideas?