So I finally got time to pull the dead tweeter from my 3.6, and it was kind of odd- the front "plate" holding the tweeter and rubber parts on had separated from the main body of the driver, and I noticed the gasket had a twist in it, so clearly someone has been in there before me. I ran a track through it and there was no sound, did the same with the other tweeter and was able to hear some tunes. I'm planning to send it to Rob, hopefully it's a simple fix and I can be on my merry audio way.
Unsound, sent you a PM hope that's okay, I didn't want to keep spamming the thread here with my noob knowledge of all things electrical:/