[ALIBI]

Has anyone in solid works tried putting a 5-10 degree angle off vertical on the tab? A slight angle on the tab could produce the unknown reflection. It looks like the rounded corners where the tab fastens to the vertical supports fastened to the tubes are slightly wider on the bottom which indicates there may be a slight forward angle on the tab. This would support a gravity drop for a game piece on the tubes if the hint were shown upside down and the tab was eventually fastened to a vertical support.