What is the range of motion on those ? Would they permit the wings to be perpendicular (flush, or very close to it) with the sides of the backbox ? Is there some source for these hinges, or were they custom made ? I'd be curious to see a close-up photo.

If it hasn't been done already, someone should lobby Tim at PHOF to get a new DMD board (or the backglass DMD unit itself, whichever of them is faulty) for the one there. To not have that working on this pin, as I observed some months back, is a cryin' shame.