I have just tried to print the test cookie for the SP15 Globe and the Lat/Long lines will not print on a 0.4mm nozzle. (they show as printable in my slicer with a 0.2mm but I don't have one of these).
Thank you for your reply Steve.
I use Bambu slicer. I have just found that if I change the wall generator from 'classic' to 'arachne' then these thin lines will print.