I was thinking of lining the inside of my enclosure with some fiberglass but I have a problem. Im not going to be able to get to the top of enclosure from the driver cut out (its already put together). So what would you recommend I do, I can get to the first three layers but the forth is not going to happen so should I just not put any up there or I could lightly stuff it with some polyfil. I all ready did a test to see if the polyfil would fall when its standing and it wont, but will it have a negative affect on the sound? Pics of the build can be found here so you can see what Im talking about..........