Yeah, after some thought, I didn't think that sealant would be the best thing on that plate. Might do the MDF idea, but later. I don't have the time for that right now. I want to completely fix this because it sounds (and feels) like a LOT of air is escaping. On a different note, since we are on the topic of my Cerwin-Vegas, and I don't want to start a new thread, I'm hearing distortion through them sometimes. It is more pronounced at lower volumes, and it seems like it is actually coming from the 4" mid. For example, in the "In the Air Tonight" bass test version, when the bass is pulsing, the Vegas are distorting on the peaks of the pulse. I bought these used, and have really had no problem with them except for now with the air thing and this. I want my Vegas to be top notch. Is there anything that I can do to test or make sure nothing is wrong with them? I have pushed them fairly hard at times, but nothing ridiculous. And like I said, the distortion is more pronounced at lower volumes (Maybe because there isn't loud music to cover it up?)