I updated my C2's firmware yesterday after not using it for a month or so. Before, I was getting consistently good prints from the C2, but now the autoleveling produces bad results. If the clearance is just right at the back of the bed, it is about 1mm high at the front. This is especially noticeable when using the new "fine tuning" wizard. The net result is that I can't get prints that work because the nozzle either digs into the printbed or is suspended in mid-air, depending on where it is on the bed. I can feel the Z-height lead screw turning as the head moves back to front, so the printer clearly believes that the bed is not level when it is. Interestingly, the autolevel procedure itself seems a bit different than before, in that in the back three probes it seems to move on to the next much faster than before. Suggestions as to how to resolve this are welcomed.