Hello, I've decided that I want to learn how to refresh the ferrofluid in my 200029-1 tweeters.  I've read that they are not serviceable, but I went ahead and removed one of mine from an AR-91 yesterday and after I found an allen wrench to fit the small screw, one thing led to another.  I learned a lot, but have probably botched the coil.  I know what I did wrong in the process and I think these can be successfully operated on if you carefully take the right steps.  Below are some pictures of wh