Well this may sound stupid but when I had the original C1's I found they did sound a lot better with the grills off (the sound stage really opened up). The MKII/Sig is not as dramatic. So with the originals the grills only went on when the grandkids came over. With the sig's the grills rarely come off because the difference is minimal and the tweeters don't get dusty. Have you tried grills off and more toe-in?
Other than that maybe try some silver IC's or SC's. I currently run Nordost Tyr2 IC's and original Frey SC's.
Last were you able to audition the C1's before buying them? If so what source/amp was used?
Other than that maybe try some silver IC's or SC's. I currently run Nordost Tyr2 IC's and original Frey SC's.
Last were you able to audition the C1's before buying them? If so what source/amp was used?