Made it!
4001 miles since I set off.
2 Problems along the way; one of the H4 LEDs in the headlights vibrated itself to bits but all the bits stayed together inside the headlamp bowl so went back together and the biggest problem was early in the trip when I got to the hotel in the Black Forest only to find that somewhere on the Autobahn my shampoo bottle had burst open in my toilet bag. Toothbrush taste really not good for a couple of days, apart from that everything just worked.