Acoustic Zen Adagio break-in questions....

Can you Adagio owners share your break-in experiences? I have had them on for a few days now and they seemed to start out sounding pretty good, then kind of closed up a bit...somewhat like a good Bordeaux closing down. They sounded a bit more open to start with and now sound a bit boxy. I have tried both short and long wall placement and they seem to be best on the long wall. About 3 feet out from the wall behind them, 7' apart and from the side walls one is 6' and the other is 11'.