So just in the past few days I have had 2 times when the mixer bar ‘derailed’ and the print stopped. One I caught mid-day but one say overnight for 12 hours. Have thoroughly inspected the tank and there seems to be no issues, besides the derailments the tank is still printing fine. Could this be because the tough 200 seems extra viscous and creates more suction force that just overpowers the magnets? The lifetime of the tank is still 45 days left (around half the lifetime).