In the second part of my interview with veteran framebuilder Dave Kirk, we talk about the last phase of his career with Serotta, and then his move west to Bozeman, Montana, where he opened his own shop. This interview takes a really deep dive into fillet brazing and the finer points of one framebuilding's most under-appreciated techniques. We begin with a discussion of the patented DKS suspension he invented for Serotta and was used in the Hors Categorie frame.