Done!
Not as difficult as I thought.
This pic shows it (still not sure what it's called) off the seat with the leather off. It's made up from a sheet of steel/aluminium some plywood and foam. I had already put a bend back in the metal by this time.
![[Linked Image]](https://www.tm-img.com/images/2025/03/29/IMG_20250329_144906.md.jpg)
This shows the bolt holes on the side of the seat. Bolts are those star shaped size T25.
![[Linked Image]](https://www.tm-img.com/images/2025/03/29/IMG_20250329_131751.md.jpg)
I took the opportunity to stretch and glue the leather to take out some wrinkles before bolting back on.
Thanks all.