Yep, it is mostly fixed. It was the exhaust. The muffler shop bent the bracket slightly above the top of muffler. When hot the exhaust would expand just enought to close the gap to the point of causing the rattle. Sure did sound like the hatch. I do still have a very light rattle on occassion which I really think is on the passenger side of the hatch. I had backed the bumper off a little to much on that side. I just need to tweek it a little and I should be good. Its not very noticeable so I haven't been in a hurry.

One note to everyone, if you have had your exhaust worked on in any way and develope a "demon rattle", it is more than likely right at the top of the muffler and bracket. Very close tolerance from the factory, just a couple of millimeters expansion can get you a rattle.