Wow ... sure wish I had your file last year when I rode the GDR. I have to confess, I was "Zumo-challenged" last year and got lost a lot. And I dunno what it is ... but I seem to have a personality clash with MapSource. I experienced it as old, clunky software.
I've since bought a 60CSx and am now learning how to use it. Hoping to ride the GDR again NEXT year - in approx 2 weeks, vs. 2.5 months last year! - and have everything dialed in.
Anyway, as always, appreciating the details, clarity and time you put into your reports for us ...
Currently no bikes. ;-(