I just bought an R/T Charger and it has 34000 miles on it. I can feel a slight hesitation when it is idling and I also feel the same thing when I am cruising on the interstate. I was wondering what may be the cause. I took it in to the the dealer today and the service rep told me that he felt it to. He said the hemi is supposed to be tuned up at 30000 miles and wants to charge me over 200 bucks for spark plugs and a tune up. Is this normal or should I go somewhere else?