I just bought some dia-compe drop bolts from http://www.loosescrews.com. The owner assured me they would work with campy nuovo record brakes. My bike with campy brakes, however, is 2000 mi away so i haven't had a chance to try them yet. Also, you may purchase drop-bolts for dual-pivot brakes from http://www.harriscyclery.com. They look to be small runs of hand-made parts.
- Don Gillies
San Diego, CA