Thanks for the hint. I have had tailbone issues with the seat on my Shadow, and recently bought a roached-out replacement seat. I plan on changing the profile (flattening it out more, instead of a "pocket" for the posterior), adding new foam where needed, and a new cover (NOS or custom, depending on the cost).
Updates to follow.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.