I am doing my first build (Dura-Ace on a Seven) and, using documentation available on the web as well as the good advice on this forum, I've been doing OK.
But now, my first snag, thankfully a minor one. The ferrules provided with the DA brake cable kit do not fit into the tops of the barrel adjusters. Should I be using ferrules there at all? Looking at other bikes, it appears that they have (typically plastic) ferrules that do fit snugly into the chamber of the barrel adjuster.