So I'm having issues with tube 1 loading and unloading. its not moving it up to the extruder. If i help it when it comes time to unload completely it pulls it around 20mm away from the extruder and then tube 2 hits it and i have to stop everything. If I help it along tube 2 seems to be fine and can unload and load correctly. Is there a torque system going on here that needs adjustment? Also when tube 1 is doing its work i hear a high pitch ringing sort of sound.