Originally Posted by
SJX426
@
tsappenfield - is your FD adjusted correctly? Outer plate parallel to the outer ring, plate clears outer ring by 1 mm. If so then, it is normal, even for 5 sprocket blocks with original chains. Using an 8spd chain might decrease the rub issue.
How did you replace the outer edge of the chain?

Shimano has always been parallel, but I think on Campy of that vintage, the FD cage maybe is supposed to have the back side turned in by about a mm.
Find another old timer to be sure though. We didn't get much Campy in the shops I worked in back then and I didn't get to work on it very often.