When it first started going wrong, I emailed Orthoflex explaining my situation and asking for advice or recommendations of saddlers in the UK who might know something about these. I got no response nor acknowledgment of that email. I also posted on Horse and Hound, which is a UK-based forum, and got recommendations for a saddler near Newcastle. Trying to phone him revealed that he is apparently no longer in business or has changed his number. Reactor Panel also makes paneled saddles that work on the same general principle as Orthoflex and they do have UK people. I phoned them and they said that their systems are totally different and they could not help.
One should not get so attached to material objects. But I think the saddle looks rather sad and lonely. I wish I could figure out how to make a chair or something useful out of it.