Mornin'!
Now to put the cat among the pigeons!

Go and have a look at eBay lot number: 257760281124
I have no first hand knowledge of the machine and I have not seen the beastie, but it looks good, if eccentric value!
Also I have a friend who runs both Buell and a Harley, with belt drive and he is of the opinion that they are good and make for a smoother ride, with less transmission snatch. His other machine is a Honda NC750X (half a 'Jazz'!) that is chain drive and he is of the opinion that the belt is easier to live with than this chain transmission.
Changing the belt is more involved than splitting and then riveting, or split link installing, with a chain. That is a personal preference that he is happy to do himself.
Hope all is well and the ailments are improving or being managed. Duke is getting a 20K mile top end overhaul. Keep wearing them out!
BillR