I started my first high quality print last night before going to bed (expected print time: 16 hours). When I checked this morning I was very impressed with the quality of the print. Honestly much better then I was expecting! The only issue is that somewhere around 70% of the way through the job, the printer decided to move over about 1cm. The upper part of the print continued like normal, but strangely offset. I checked the gcode thinking maybe it was a slicing error, but everything looks fine. I think this was some strange software error in the printer itself, but have no idea. I checked USGS, no earthquakes and no brownouts in my area. Any ideas what could have caused this?