Quote Originally Posted by alpinerabbit
Large jump? How do you mean? for the double? Why would the compact require a larger jump than the classic double?

I did not need to exchange mine. I would have had to for the triple I think. It still works smooth, smoother than boyfriend's 105 he says.
From the Campy website, the Campy Centaur or Chorus front derailleur specs:

for double standard crankset - capacity 15 - max. chainring 54 - min. chainring 39

for compact double crankset - capacity 16 - max. chainring 50 - min. chainring 34

Alpinerabbit, what size chainrings does your compact double have? I don't doubt that the standard front derailleur would work fine with a compact, but Campy has apparently designed something that works EVEN BETTER with a compact. The difference is in the inside plate of the cage. The capacity in teeth is misleading because the chainring diameter difference would be more noticable in radius.