Campy record headsets are not difficult to pit in my experience. This is particularly true on bumpy city roads. I prefer roller bearing headsets for that reason. It can pit for a number of different reasons but certainly a loose headset is a prime culprit. I'd put in new ball bearings, adjust it right, and ride it. You'll end up with slightly indexed steering (friction is better here, ) but it will be rideable. When it goes, I'd replace it with a roller bearing headset (velo orange sells them) unless you need to keep the bike all campy record.