Adam Elliott and Eric Southwick, Breakfast Gorge on Day 3.
Winn, Weingarten, Kern, Elliott, Southwick, Deschler kayaked this stretch of the Salween from the Paksho bridge (30.106033°, 97.198115°) to near the Tibet-Yunnan border (28.189463°, 98.475082°) at very low water in March, 2007. It is clearly not raftable - there are numerous rapids that can't be lined and require difficult portages. Put-in elevation is about 9,500', average gradient is about 18'/mile (with sections that are much higher), Class 5-6, about 180 miles minimum.
Worthy of repeat? Yes, for expert paddlers, only at low water (estimated 7000 cfs at the put-in - a very low flow compared to average). It's one of the worlds most intense runs, physically and culturally. Make sure you have the proper permits - in this part of Tibet they are difficult to obtain. See http://www.lastdescents.com/1dnujiang/index.html for photos by Adam Elliott.