Remember with campag 1978 was a year of change
brakes became recessed fit, front derailleurs were given a lip on the cage and bb's and chainsets were changed to accomodate that.
buy CPSC or Post CPSC versions of all parts
or conversely if your frame takes non recessed calipers (frame just sneaks into the end of pre CPSC era) you might want all pre CPSC
although full post CPSC can be used apart from callipers
Remember with campag 1978 was a year of change
brakes became recessed fit, front derailleurs were given a lip on the cage and bb's and chainsets were changed to accomodate that.
buy CPSC or Post CPSC versions of all parts
or conversely if your frame takes non recessed calipers (frame just sneaks into the end of pre CPSC era) you might want all pre CPSC
although full post CPSC can be used apart from callipers
but don't mix the two