Hi, new owner of a 55plate A3 3 door and I've noticed that the driver door when closing slightly hangs down a bit (and i mean only ever so slightly) and when it comes to the frame you can see it lifting up into place. also the door squeeks/creaks against the door seals when driving, I dont know if its because of this or if its the chassis twisting. Both doors seem to be doing this but the passenger door doesnt seem to have the first problem. Advise? How much roughly would a door hinge pin be from Audi? fitted?