appropriate clearances...
I'll first assume that the FD is set to the proper height and the right side of the cage is parallel to the big ring. After that, the high limit screw should be set so there's only .5-1.5mm of clearance between the chain and the inside of the cage when you're in the big ring and smallest cog. If you have to position the cage further to the right, to get a decent shift, then something else is wrong.
I'm not sure I know what you mean by backing off one click. You should be able to adjust the cable tension and high limit screw to position the FD in-between clicks. Are you making some adjustment to both or just one? If you have to lower the cable tension a bit, the worse that can happen is that it take four clicks instead of three to make the shift. The first half click just won't cause any FD movement. The left lever can move through five clicks in one sweep of the finger lever. That's what it takes to shift a triple from the little ring to the middle. You should never need that much cable travel to operate a double FD.
I could be also be the chain, it's one place I'm convinced that Campy has the best value of price compared to longevity and you're insured of compatibility.