When I take the Bullitt in a tight circle and put it in neutral and let it continue coasting in the circle I hear a loud klaking noise. My wife stood in the center of the circle and said it sounded like it was coming from the back wheel area but I could feel some vibration through the shifter and I am feeling it is coming from the transmission. Any thoughts? This has me really worried! By the way, if I keep the car in first gear and do the tight circle I don't hear the sound.