Which tells us only that: 1) He's got an unfixable problem, or 2) he hasn't had the problem looked at by a competent mechanic. FWIW, I'm no great bike mechanic but I've installed a couple of Shimano FDs with Shimano triple cranks and never had a problem getting them to shift reliably. If you follow Shimano's install directions step-by-step the whole thing just works...

Hard for me to imagine that the FSA cranks are so lousy they couldn't be made to work. Of course, as pista suggests proper shifting technique is required. Before I got the system completely dialed-in, I noticed that I did occasionally need to hold the lever in-place for an extra half-second to get to the big chain ring, or ease off on pedal pressure to drop to the small chain ring; never both with the same setup, though.