Carbonfiber byron mustang blades
What can I tell you. That was the standard setup that Byron had. It was on ALL 4 of the Mustangs I had. They may have changed it along with the two piece wing. I have in my possession, the Byron schematics for it. I also have the parts listings page that shows it.
There is a spring that connects to that piece that goes into the "off-set" you are talking about. Upon air loss, the spring pulls that lock out, the gear down, and then locks it on the bottom end.
-Mustang51