Is it worth the trouble of trying to install sound dampening inside the actual door? I've watched some videos and I've seen quite a few people install the dampener inside the door behind the speaker. I know SecondSkin has the speaker pads that you are supposed to install directly behind the speaker to help deflect the sound waves from bouncing back toward the speaker, and that's not what I'm talking about. Also if it is recommended to install dampener inside the door should I be concerned about the extra weight on the door hinge or will it not matter?