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Published. Unfortunatelly it is a flaw of Cura, as it can't print sub nozzle dia. thick walls. It is not exactly Rev1, as I lost some source files, but it should be close to it.
Concerning your second question, all 8mm holes have additional 0.5mm clearance for overextrusion. 8mm precision rod was siting there just fine. Not too tight but no wobble either. If you measure internal dia on plastic part close to 8.5mm than there is something wrong. Maybe just a bit higher extrusion multiplier will help.