Salut Jaques

I've not the Kahedo-one but a nearly similar (5 cm up and harder) but wider between my legs than the kahedo-one.
Go to your local saddler/upholsterer and you'll get your personal one - i could make a try-run for half an hour and was getting corrections on the seat before he finished it. It was cheaper and faster in use than the Kahedo would be.

And the "flat top" is just top for the travel time to move my "ass" in any distance.

Just as another hint in this case.

T�n�r�- and XT-Regards to France

Andy