I have a friend who has a new 06 GT coupe (auto), who has had an annoying rattle/thumping sound coming from the passenger front end. He has taken it back to Ford, they replaced the front strut, no luck, and finally told him they can't find it. Has anyone experience this?? He told me it is most noticable at low speeds as example, when going over a speed bump, there is this rattle thumping sound. Thx for the help.