I'm looking at my /7 bike, which presumably has the stiffest strongest frame of all the /5, /6, /7 series, and I don't see that it is appreciably more gusseted than the R65 frame, which is a little bit shorter, which might even help it with stiffness. Definitely, the R65 fork/steering assembly is better, at least until the monolever models that had triple clamps and forks more like the K bikes'