never heard back from and just saw this post, not sure if i told you when you go into gas stations in Argentina use the YPF stations, virtually all of them have free wifi so you can keep us updated, and you don't need to spend any money to use it, they also have hot food that sometimes isn't visible or on the menu just ask

i checked your blog and noticed the mount on the top bar above the speedo, i would suggest against using that for the garmin 550, the weight and the vibration on the ruta 3 and ruta 40 will snap the welds in you inner headlight mount, (it happened to a guy i riding with) i used this http://www.ztechnik.co.uk/contents/en-uk/p227.html a lot stronger and handlebar mounted instead so less vibration

paul