I took this picture for reference, just in case, I had problems putting it back together :), but maybe it can help you!
I did replace the little spring, but in this case seems to be the little actuator that is weak.
ATF change, only few metallic shavings, ATF was mostly OK (was changed a little over 10.000 Km only, but after Morocco)
A gift from the Land Rover party.
U-joints work, after checking them out, one in the Disco and one in the Series need to be changed.
Series, you can't really see much other than dirty :)
I need to finish the series and then replace rear ABS sensors on the Disco, since I broke one cable at the party too.