My 1 pi tower drivers are breaking in nicely. I'm building a new pair of baffles for them to accommodate the Vifa tweeters. I just table sawed the old ones off the boxes! I had a great time "messing" with the speakers, and I learned a thing or five about tweeter loading and dispersion. If I can find my camera, (it grew legs and hid) I'll post a couple of pics.
I'm done experimenting for awhile. My next project is a pair of basic 3 Pi's. This time I will just buy completed crossovers with the coil & resistor upgrades.