I ride campy record/chorus 9 and love it, I can get everything adjusted and shifting perfectly, like butta however, Im not sure about your crank (hehe) but I know the carbon chorus requires a specific lenght bottom bracket. I think 102. perhaps thats your issue. I dont ride the chorus anymore because the threads for the pedal cracked and pulled out but the record im running now is also very happy on the 102 spindle.