The above statement ^^^ is also clearly explained in both the Park Tool site, and BicycleTutor. A triple crankset may require a clearance closer to 2mm, rather than 1mm, between the FD cage and the large chainring.

This is correctly adjusted for this particular set-up. Note the FD is in the middle of a shift - see the clearance? Very, very close. Worked well on this. Your mileage may vary: