Okay, here's the latest.
First, I tightened the belt. It's better, but the squeal still hasn't gone away. It's a little better, but not a lot.
What's more telling is that I don't think they put the right belt on. If I don't miss my guess, the belt should seat on both shoulders of the pulley. but it looks like it's about 1/16" too narrow. I'm wondering if the squeal is caused by the belt ribs not being properly seated.
Finaly, p/s pump reservoir was almost completely empty. Filled it, but now it's almost empty again. Got a leak somewhere.