So my Tumult has what appears to be a rubber gasket around the driver. Was that there only for shipping, or should it be used when it's mounted? It seems like it would get in the way of the screws or mounting hardware. Speaking of mounting hardware... What should I use to mount it? I've used small bolts with wingnuts (with the nuts on the inside of the box) on previous subwoofers. I'm not sure if they'll be up to the task of holding up a 50+lb driver. Any tips?