I've used that stuff. You can kick and beat on the panels hard and it's like hitting a brick wall.Get some foam in those panels....and not that cheap crap at Home depot
http://www.uscomposites.com/foam.html
8lb/ cuft //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif![]()
