Yeah, it's hard to find a reliable beta. I had one, but we haven't corresponded in a while since I stopped writing the fic she was beta-ing. Hm. :/

I suggest coming back to the fic after a few minutes. When you first see it, you think it's perfect, and you can't see anything wrong with it. A completion bias of sorts, you're ready to stop working. When you come back to it, though, and read it through one more time, you'll see lots of small things that you'll want to adjust. That's what happens to me when I post things on LJ after moving it from Word, and when I post things on FF.net from LJ.