Did you ever upgrade to the OSG clutch? My Carbonectics Triple Carbon is starting to feel soft, so I'm also looking.
No, I went with the HMG12SD Exedy twin clutch that I got new from Coz.
There's a few reviews on it here:
http://www.nsxprime.com/forum/showthread.php/199982-Exedy-twin-organic-clutch-who-s-running-it
How much torque do you have? I'm supposedly right at the torque limit of 425 ft-lbs at the wheels. Only a few thousand miles with this torque though.