The dealer fueled it up and my MA said they always put Premium in it. The car only has 30 miles on the clock.
Also - Update-
I did put the clutch in while idling the chattering sound did go away. It still seems internmittant. Since I'm not sure what the engine is supposed to sound like normally I'm unsure. But the dealer has my car today and they are aware of the issue and are going to try to duplicate the "Chattering" sound. I guess I'm just a little nervous since the car is so new
Thanks for the suggestions tho