You can pull the 3rd member yourself and bring it to the diff shop and save yourself a bunch on labor.

The diff carrier needs to have bearings pressed on/off and then have the backlash reset using new carrier bearing washers. That should be pretty cheap ($100?).

The only thing that would keep me from doing it myself is that I don't have a set of the washers to choose from to reset the backlash. They are a dealer only item, AFAIK. I would do it on the older style diffs with screw carrier bearing adjusters in a heartbeat.

'97 4Runner, '06 F350, '86 4Runner, '05 WR450
http://home.4x4wire.com/erik