I was having some (possibly self inflicted) teething pains with my Bambu A1 0.2mm nozzle when I initially got the printer & most of my prints didn't require the resolution anyway. But for this fiddly part I decided to give 0.2mm a try again. Other than adding some pad support I just accepted the slicer defaults. I'm quite happy with the result. The long distance is 15mm & holes are 1.6mm to give reference. Going to go back & re-print some other stuff now to see the difference.