Sooooo...just to update, the dealer got me a replacement bike with absolutely no qualms whatsoever. Two technicians rode the bike, agreed it was faulty and that was it...done.
Anyway got the new bike and just a minor question - does the fuel gauge 'adjust' itself for a number of miles? As I was riding along, the miles of fuel remaining were dropping quite rapidly. So I filled up, gauge showed 170 miles remaining after about 2 mins which I guessed to be about right and after about 10 miles of town riding showed 130 miles remaining. Difficult to tell if the physical fuel level has dropped but the gauge still shows full. Never had this on any car nor on previous bikes.