Well, I got 2 subs in my 2000 XJ. Then came the rattles as I expected. However, it is coming from an unusual spot, the rear hatch door handle. I moved the hatch handle around and noticed that it has a little bit of play. Enough when the two 12's hit, I get annoying vibes that can be heard up front. I was thinking about using dynamat, but that is a last resort as I don't think it will do much good. There may be a way to get rid of the play in the handle. Does anyone have any suggestions or had the same problems? What could I use to fill the free space between the hatch handle and the body that surrounds it?