Dried up Ferrofluid?

I went through the exercise about a year ago with some old soft dome Scanspeak tweeters.  I did watch a few you tube videos explaining how to disassemble the tweeter, clean out the old fluid and install new fluid.

It turns out my Scanspeak classic tweeters were much easier to disassemble than the tweeters on you tube.  Once disassembled, you use blotter paper and I think alcohol to soak up and clean any remaining old fluid in the tweeter "well" (my word) and then buy and install new fluid.

I spoke with Madisound and they thought it would be ok to not replace the fluid at all, and I believe (might not remember correctly) they said many new tweeters don't use the fluid at all. I ran them a little without fluid but ultimately installed the fluid and like the sound better.

Erik, I asked you a while ago, but you never answered.  I read your paper on a pair of speakers you built, but asked how many pairs you have actually assembled?  Is it the one pair, really just curious, I am not handy and wouldn't dare try.

Sorry erik, I must have missed your answer.  I wouldn't have expected you to build the cabinets, a whole other deal requiring the woodworking tools.  Just buying a kit with all the parts preselected by someone else seems adventurous to me.  As I mentioned, I am not handy in this way.

I have read several articles by people who have built speakers (not the cabinets) and the tuning via crossover part selection seems not for the faint of heart.