I'm pretty new here as you can probably tell by my post count, I did a search for what the title of this thread says, and many pages of stuff came up, but nothing that helped me out, so here goes. I own a s2000 with a 12w7 in the trunk with a JL hd750 on it, I get a horrible rattle, a rattle that I don't think Dynomat material will even fix, the truck actually is forced away from the seal at the front part of the trunk (nearest the rear window). I've tightened up the actual locking mechanism and that stopped the trunk rattling from that end. Any suggestions on making this less of a problem? Thanks for any input you may have.