I was a long time Thiel owner and stuff happens. There are usually no ill effects if the only damage done was that the dome was pushed in, once you pop it out with a piece of tape. I know that when one reads here how you can perceive while listening to music material the effects of anything at the electron level, (cables, passive components, vibration damping material et al) it is hard to believe that a driver showing some visual signs of tampering can sound "pure", "natural" and "delightful". It usually will continue to sound as it did before. If you can't hear a difference, thank your lucky star. Now if fall prey to neurotic anxiety as true-blue, high-ender, subjective audiophile are wont to do, you will never be happy unless you change speakers, because even if you change the tweeter you will still fear a mismatch with the other one. If you change both, you will still fear a mismatch with the other drivers, or the fact that maybe the new units are not up to the standards of the old ones, or that the drivers will not have burned-in for the same length of time, the list goes on... So you chose: sanity vs. insanity. From the mid-fi trenches. Good day.