Quick update:
First, the show was packed. Best crowd in many years. The Ducati stand had a cutaway of the Monster engine, and the new clutch parts were plainly visible. Apparently the only parts changed were the two thin rings and the most inboard friction plate. The narrowed plate and ring inside of it are visible in the pic. The dealer I spoke to - Beverly Hills Ducati - agreed that the plates were only available as a set, but offered to contact DNA and let me know what they said about a kit. I will call him on Tuesday. And there is always Barnett.
I spent most of the time sitting on little bikes, various 300s on up. The winners were the little KTMs and the Yamaha FZ-07. The cutaways of Yamaha's engines - R1, FZ-09, FZ-07, and YZF450 were fascinating. The 07's engine is unbelievably compact; the counterbalancer bobweights actually go between the flywheels, missing the big ends.