The problemmight not be the seat.
The firstfive days of my last road trip were very uncomfortable. I wasn't sure why. I hadn't had this problem before. I was hot, and had monkey butt issues.
The problems would start after about 3 to 4 hours of riding.
I tried making changes to the windshield and lowers to try to get more airflow but that didn't help.
On dayfive I noticed that the heat from the rear cylinder head seemed to be going into the gap between the seat and the frame.
I really didn't think thiswould bethe problem but I had to try something. I was going to be heading to the southwest and the temperatures would be going up.
I pulled the side cover and filled the gap with a towel.
Problem gone!! I could ride for up to 18 hours with temps in the low 100's with no problems. I rode the next 11 days with no issues.
I'm still working on a permanent fix.
Might be something to check.
The gap-
The quick fix. It saved the ride.