I recently built two shiva sonotube subs, I was running some sinewaves the other day and I noticed a rattling sound. I checked all the walls and windows and everything else nearby, and finally decided that something had got inside the sub and was sitting in the driver surround. I pulled the driver out - nothing in the surround, I then shook the driver and noticed that the rattle was something inside the dust cover. When watcvhing movies at high volume it is not noticeable but on low volume it is a pain in the arse. How hard would it be to remove the dust cover myself to get the bugger out? Or should I just sent the driver back and get a new one? Anyone want to take a guess at what's inside it? Harry.