Not sure if this will work, but this is what it looks like without the center diff locked....
https://www.facebook.com/photo.php?v=10150905782248123
This is what it looks like when you remember to hit the button:
https://www.facebook.com/photo.php?v=10150905786088123
https://www.facebook.com/photo.php?v=10150905782248123
This is what it looks like when you remember to hit the button:
https://www.facebook.com/photo.php?v=10150905786088123