Barry Search will probably pop up now and say he broke it/replaced it and ruin the story George .Yes I share the same thoughts re Super T10 & later versions, in the TL sedans they like them due to weight, but you can see how the case twists and causes taper wear on the teeth.
I still have the original USA case with broken lugs, its now serving as a drilling/machining jig for the T44, never ending story.