Hi, I noticed today that when I got over 150 in my gtr35, the bonnet start to shake or flap and seem very violent, but not the front end where the catches are, the back near the windowscreen or hinges are. Is this a common thing. When I stopped the car and checked to see if the hinges my be loose or something it felt Fairly solid. With a bit of force there was a very slight bit of movement which you would expect with any panel on a car. Greatful for any advice.