I know this is a question w/ no really good answer but is there anyway to even slightly diminish the rattles from the hatch/glass in a FD?? I've tried angling the sub different ways but w/ limited room (didn't want to ditch the spare tire so box is under rear bar) I don't have many options. I only have one 10" kicker so I know it doesn't hit that hard!!

 

Try putting a little litheum grease on the foam pads between the hatch and the quarter panel. I've heard that this quiets the rattling. Also, if the hatch latch is adjustable, you can play with that.