The universal damper removal tools will not work on the Thunderbird dampers. Here’s a pic of the tool I made several years ago specific to removing the T-Bird dampers before having a Ford service tool donated to the cause that also works for this purpose.
And here’s a pic of the Ford service tool mentioned above. Whether this tool is specific for this purpose or is adapted I can’t say but works well for the ‘Bird damper pulling.
Lorena, Texas (South of Waco)