Hello Everyone, Just recently picked up an Robo R2 to get into 3d printing earlier this week. So for the last few days I have been running some test and calibration print jobs to make sure everything is properly aligned, working and whatnot. So, to the weird issue I encountered today... I was trying to print some bed leveling squares. (See Bed levelling squares (150x150mm) on thingiverse) The issue was after I started the print job. It went through the normal auto-bed calibration and then started to raise the Z axis on the last corner, but it wouldn't stop. It jammed the bed into the nozzle and ended up with a piece nicked out of the bed. I ended up having to hard power it off and restart to retract the bed away from the nozzle. Anyone else encounter this and what can be done to prevent it in the future?