I've got a little project planned for the weekend, I plan to dynamat the doors. Depending on how this goes, I may add more later to other parts of the car. I've read several threads/post on this. I'm looking for a little confirmation before I get started. To do the the doors, I need to remove the interior door panels and put a layer of dynamat on the inside of the outer door skin? Do I need to put any (is there any benefit) to putting any on the door door frame where the interior panels attach? Any gotcha's I should be aware of?