I don't do anything different as far as grease, tension or break in compared with normal steel diff balls.
Proper prep on the diff rings is always a must, but ceramic balls seem to be more consistent with less maintenance.
Chrome plated balls are the worst. Once one ball starts chipping chrome, it'll cascade through the diff, causing it to get very crunchy, real fast.
Privateer racing lots of stuff.
Remember kids, racing isn't fair!