How smooth does your G5 Idle? Mine sounds smooth, but I can feel a bit of a vibration, not a perfectly smooth vibration, comes in through the steering wheel. Nothing major, but I just don't know if these are the kind of cars that normally have a vibration, or are usually really smooth? Just picked up our winter car / second vehicle, a 98 cavalier, and it idles way smoother than our 06 Pursuit. Something I should take in under warranty, or think they will just tell me it's 'normal'...?