Mopar 8 3/4 question

The clutches are all steel no fiber on them from the factory, so what happens the clutches start galling, start peeling up metal then they don't have any surface area so they slip. The manual just tells you how to put it together, there are several ways to put in the clutches.
here is a link to the manual. http://media.spicerparts.com/cfs/files/media/ahd5WcQ3TvJismpvQ/5315-3.pdf?store=original

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