I think Jim has advised you well here. Ive never tried to repair a rack either but have read that bore damage over time is the root of most of the leaks. I think r&r the whole rack when it becomes necessary is the way to go. And again like he said, its how much fluid its going through is the deciding factor and up to your judgement. My Subaru rack has slow leak on the passenger side, its not annoying enough for me to swap it out yet.

k.