there have been a few cases of bad clutches from factory in the past. not saying the case but it is a possibility
if you are experienced with clutching, you will know how to remove it and inspect. If you are not, find a friend that is or revist your dealer with your concerns.
I have seen issues of clutch failures causing crank/bearing/case issues before. As I said before, not saying this is the case, but its not something worth messing with in my experience.
Especially on a new sled. When my 11 was new, I experienced no such noise/vibration, same went for my 13
seems odd to me