I'm a little further along with my bike build and last night I started adjusting my front derailleur. I ran into a snag though and while I think I know the answer, I'd like a second opinion. The problem is that because of the design of the derailleur (large inner plate), when adjusted for the proper clearance on the 52 tooth outer ring, it hits my 42 tooth inner ring (Stronglight crankset). The Shimano website states that the derailleur was designed to work with 39 tooth middle rings but I didn't take that as it won't work with 42 tooth inner rings. In order to get it to clear the middle ring, it needs to be above the outer ring by about 5mm which I think is too much.
Anyone using this derailleur with a 42 tooth middle ring? How did you get it to work and how well does it work? If this won't work, can I use a Campy 10 speed front derailleur or a Shimano 9 speed which do not have the large inner plate?
 I did more reading on Shimano's site and it states that the minimum difference between top and middle rings is 13 teeth. Certainly explains what I'm seeing. So can anyone suggest a front derailleur to work with Ultegra 10 shifters and a 52/42/30 crankset?