The FD is desgined for a 30-39-52 crankset, but you have a 30-42-52 crankset. It's therefore possible that the height of the FD is not correct - if set so that the outer cage is 1-2 mm above the big ring, then the inner cage will catch on the middle chainring and not be able to move out far enough to shift the chain onto the large ring. A 5603 FD (designed for 30-39-50) would work better with that crank than a 6603 FD. If that is not the problem, then you'll need to provide more details about what you have and haven't tried.