ok... i hope that i can recover from my stupidity. i installed brand new dura ace brake to a brand new carbon frame without the flat washer. (there wasn't one that came w the brake). so, the star washer came to contact directly with the frame (and fork). the washer kinda took a bite at the mount location. the surface has been scratched and some carbon is fraying at the rear brake mount. there is a some denture in at the mount location also due to the scratch. may be something like 0.5mm and the thickness of the rear mount location is about 4mm. i'm going to get a flat washer that is bigger than the scratch to spread out the force. the question is -- is the frame hosed? i just hope that the frame is not structurally compromised...
<sigh>