Sorry to hear of the situation, not the best and no doubt spoiling the new bike experience for you. I feel your pain as I had the same happen to me 15 kms into the first ride on my first brand new R3T back in 2008.
I found from my own experience that it's down to how much noise you want to make about it.
Obviously you need to keep the dealer on side, they get paid to work on a "clean" new bike and will attract your business if you are satisfied, a good dealer would not have a problem going into bat for you. I jumped up and down to Triumph direct about the new bike experience... I found them to be helpful, they had the dealer provide me with a demo R3T to ride until mine was fixed.
I hope it all works out for you, it's a great bike you have there!