My 94 was the same way.... I wondered about it also, but it never seemed to cause any problem.
Called the dealer and asked them, was told they where often that way and not to worry about it.?????
Ran that way for a long time(20-30K), but the trans has since been rebuilt due to other problems. I have not checked the shaft since then, will need to see if it is still like that...
Anyway, no you can't do anything about it from the outside. The outside ring is a preload ring, but the book has very detailed instructions on setting it up, so I would not advise messing with it.
Mine probably moved a good 1/8 of an inch or more at what would be the end of the shaft if the CV was not on..
My 2 cents.