My father just gave me this beautiful machine for my birthday, but it has one nagging and dangerous problem. The tranny shifts fine when the car is in motion, but it experiences long delay (about 3-10 seconds) when accelerating after being brought to a stop. I can apply light pressure to the gas pedal or I can floor it. It doesn't matter, the car just waits for a few seconds and then zooms off. What should I do?