Nice trip and nice photo's !
I also have a D606 on the front but find the Dunlop a bit too soft for the back, especially on the long tar stretches. I use a Pirelli MT90 Scorpion at the back now which gives excellent grip on tar and is surprisingly good on those type of roads you did.

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2014 XT660Z - Barrett pipe, DNA stage1.5, Barkbuster hand guards and handlebars, Pivot pegs, Teknik suspension, Guard-it engine protector combo, B&B rear rack, Trax topbox.