I have been in pursuit of a more comfortable seat and I have achieved my goal. I liked the traditional look of the seats that came with my Unique but they weren't very comfortable. A lot of the other manufacturers use simular seats. First I angled the seat when I added seat rails and then ended up adding lumbar support. I posted details of this project on uniquecobra.com, see
http://www.uniquecobra.com/topic.asp?TOPIC_ID=331
Okiesnake