Sorry Jay....
After talking with a few of my buddies and their stories and expert opinions I went and bought some poly fill from walmart lol Took everything apart bolted down the box and filled it up with some polyfill. Guess what???
Sounds WAY much better, no joke
No more vibrations or rattles from the box. All I get now is nice crisp deep bass.
Daniel, I bolted down the box by using some self tappers and going straight through the middle of each hole where the sub goes. Super strong and no way its coming out now.