Matlock Dvd Any Idea Why The Matlock TV Series Is NOT Out On DVD's Yet?

Any idea why the Matlock TV series is NOT out on DVD's yet? - matlock dvd

Every TV show there with Andy Griffith on DVD seems to be available, with the exception of this series. Has anyone any idea what you are saying, is it? The knowledge of where or when they become available. Thx! 050707 7:20