Just got back from the dealers and it definitely feels like they have sorted the issue? It was only a short run back of 30ish miles but I'll go so far as to say it has also sorted the snatchy throttle at 30/40mph that I have had since I bought it. Happy so far. I'll give it a few more miles just to make sure. Anyway the mechanic said he has downloaded an update for the updated map he had put on at the service. He seemed very sure it would cure it, which suggested to my very cynical mind that he may have put the wrong one on in the first place? Although it was the same number as my mates 2014 bike when we compared them using Guzzidiag?? Will post back when I've had a proper ride.