I was! And they shipped quickly.
I found them via another post in this forum. In an effort to spread that love, here’s the link:
MW Audio MT-4115: 1″ Dome Tweeter
Also, interesting note – when I opened the second speaker I found that its crossover had not been rebuilt. Everything looked good on the board, so I opted to just swap the tweeter and cross my fingers. So far so good. To my ears, they sound the same.