So, after spending a week dialing in my PETG settings (and I think I'm finally there), I peel off a test print, find it about as much to my liking as I think it's going to get, and go queue up the next print. And on the first of the 9 probes for the bed levelling, the extruder gets crashed through the bed. I watched it: forget whatever my Z-offset was, that lead screw was trying to crank it all the way up to 0, and it was tipping that corner of the bed in the process. Tried a bunch of stuff, rebooted, cycled power, tried a bunch more stuff, got it to do the first six probes successfully before crashing in the left rear, uttered the usual monosyllabic words of Anglo-Saxon origin, and promptly commented out the Gxx command to run the levelling routine from the Octoprint start script. It's printing fine now. Except in the process of trying to get the probing to work again, at some point my touch screen went back to that mode where it just ignores any input and once again, I had to reseat all the wires from the PI to the LCD. At this point I'm starting to ask myself, will I ever be able to depend on this stupid thing? Starting to get annoyed.