ok, when i turn my subs on, they sound good to a point, but after I turn my head unit past 12 a rattle comes in on low low and certain other bass, could it be one of my screws rattling? I didn't put weather stripping to hold down the subs before i screwed it in... or is it something like the box, or maybe even internally in the sub... It's really annoying and I hope theres a solution...