If you have Campy ergo levers, they have enough cable pull to handle any FD. There should be up 12 clicks. No more than 4 are needed for a double FD and 7 for a triple.
Never assume that the limit screws are set correctly. Take the cable loose and start over, with shifter set to the start position. Push the thumb all the way down to be sure that no more clicks remain. Set the low limit screw so there is no chain rub in the little ring and largest cog. Intentionally screw the limit screw in (CW) by 1/2 turn, then attach the shift cable, pulling it tight with pliers. After the cable is attached, loosen the low limit screw so it's back to the original postion. This put more tension on the cable. Try shift to the big ring (or middle if you have a triple). This should be done with one sweep of the finger lever, taking 3-4 clicks for a double or 5 clicks with a triple. If the FD doesn't make the shift and hits the limit screw, then back it out enough to allow the shift to execute (double crank only). If there is not enough tension on the cable, go back to the beginning point, detach the cable and try 3/4 turn rather than 1/2 turn, to pretension the cable.