Trying a test print of "Car Grille Fastener" found on thingiverse, I had a failure. Part of it is attributable to the "nut" part not staying attached to the bed, as I found it off to the side when I checked on progress, but also noticed it has gotten "thready" for several layers. Also found it odd that there was a thing "thread" around each object with seemed to serve no purpose. I will venture a guess this is supposed to be part of this "skirt" mavens speak about, but . . . I dunno. The "calibration circle" had the same thin thread surrounding it and now, looking over the settings in MC again, it appears this is normal when "raft" is not selected and I should probably enable "raft" to assist with adhesion. I would appreciate any input on this and as to why the "nut" part of the print became "thready". Could that be it was a bit loose and continued to get looser? Pictures attached. I did have to fiddle with the Z Offset ending up at 1.9mm. It was at "zero" after installing the firmware. I understood the default was 1mm. This eliminated the grinding of the filament, but was discovered too late ot prevent some marring of the bed surface.