I have a 28" -29" inseam, and struggle a bit with the seat height of the F6B. I have been riding with a Mustang seat since I purchased the bike (a 2016 model). The Mustang seat helped the height issue a bit, but it is also very hard, and can create back pain after 200+ miles of riding. Even the addition of an AirHawk seat pad hasn't helped all of that much.

I enjoy doing very long rides...including Iron Butts, but I am going to be limited in such efforts until I figure a seat solution.

Any suggestions?