Don't know if this will be helpful, but I once had an identical problem once when mixing chainring styles (I think it was a 39T 6600 chainring with either a 52 or 53T Biopace chainring). I could get it to shift reasonably well after a lot of tinkering with the FD angle. However, I'm guessing that the real problems was that ramps for directing the chain up onto the big ring weren't designed for this combination, since changing the big chainring to a 6600 solved the problem perfectly.