I am having trouble Leveling the 3D printer. When I home it, it drops way off the Heated Bed - below the level of the bed even, down and to the left. I have tried setting the work origin in the middle of the bed using Luban, but home just sent it right back there. I have checked all the wires.
When I then try to level, it moves to a point just to the left of the top edge, and does the same thing at point 4. Points 2 and 3 are vaguely in the right spot - they are at least on the bed. It seems to possibly think that the bed is bigger than it is? Is there some way to get it to understand where home really is?