The previously released Pict0068.jpeg image so graciously supplied earlier this year by Dynodon appears to be differ from another image now availalble. The newer image (second or bottom image) shows a bolt and bracket (UTB upper tube bracket) which presumably prevents the plexiglas tube holder from sliding. Also some holes possibly for tube spacer bars that were later moved below the level of the slots are visible.
The Pict0068.jpeg (top image) shows just a hint of the bracket? circled in blue.
The slightly different angle in the newly released image of the demo cell tube shows the bracket bolt (enclosed by the red rectangle) as well as some other holes drilled in the inner tube sets enclosed by blue rectangles. There may have been another bracket that is not visible but this only speculation until more images are available.
