Sorry if this has been posted before. I know it's not really DIY, but I ordered the PE 10" titanic kit, and it should be here tomorrow. Should I fill it with poly, or will the eggcrate stuff it comes with be good enough? If I should fill, how much? I bought it because my Polk PSW 350 was not musical, so I'd like it to be as clear as possible. I know it was designed by a "guru" but does that mean I should just screw it together and call it done?