Saw this auction for a pair of H960 blank front panel clips: http://www.ebay.com/itm/391207099375
and though I'd pick them up... until they went for $30 (including shipping),at which point I decided I'd go back to my previous plan to fabricate some out of some scrap wood, and a pair of screws. Time to find someone who can do injection molding... (I don't think these could be 3D printed, the necks of the bulb-heads are under a lot of stress when removing panels, they often snap off; will 3D printed parts be that strong?) Noel