When I bought our roadster ten years ago both trunk bracket dividers were broken. It was easy enough and cheap enough to find them on Ebay at the time so I order two with the switches for the left side and one without the switch for the right side. The most common failure of this part is the plastic tab that holds the trunk divider's rod in place. Improper removal and fatigue of the thin plastic tab is likely why this has been a common failure for some roadsters.
The other day (ten years later) after considering a couple of potentially unsuccessful solutions I came up with a fix that should work, costs pennies, and should hold up over time. The photo below show that I cut a piece of 3/16 inch ABS plastic sheet in 7/8th"wide X 3 1/2" long strips. I used a 2"X4" piece of scrap wood and cut the profile of the bracket that I had traced on a piece of paper. I then heated the ABS strip to the point of being extremely flexible (like a well done wet noddle) and then clamped it in my homemade jig until it cooled.
The bracket and strip were then scuffed and JB Weld "Plastic Bonder" High Strength Structural Adhesive was applied.