I have a 00 F150 H.D. edition truck. It is the extended cab and both my 3rd doors rattle and shake like crazy on bumpy back roads. If I slam the heck out of them, they stop for a little while, but will eventually start doing it again a few days later. I've searched and read about numerous 04+ style with their 3rd doors making noise, but it was due to some sound barrier material. My 00 doesn't have that in it. I'm wondering what I have to do to tighten up the 3rd doors so they don't seem so loose. I'm a mechanic but was hoping for some insight into this or if anyone with 97-03 extended cabs have experienced this. Thanks in advance