Call after 10PM Pacific time.

Their night crew is much smaller and everyone I've ever run into is exceptionally knowledgeable. The day crew is much more uneven; there are some great people and some really not-very-knowledgable ones.

To be fair, there is an insane amount of info to keep track of, so I don't really fault them, but when I call in, it's usually something I couldn't figure out myself and it is annoying to get somebody that seems to know little more than I do.