You sound very sure of your method Renard. Good luck and hope your dig is a success!
I once plotted lines on Google Earth and compared them with plots on the Michelin 989 map, they definitely don’t hit the same locations, at least not if you are using km measurements. But I accept that not everyone will think this hunt is solved using a 33cm measure to get the ‘measure’ distances, or that a 559km line is drawn from Golfe Juan to Dabo. That’s what makes this hunt so entertaining, it is so open to ideas. 🙂