I've been wrestling with exactly where my Act breaks occur since I began this third version of the first draft. Up to now I have interpreted my current position as early in Act II, with a lengthy Act I behind me.
However, I considered Alicia Rasley's comments in one of her articles (you can find them by following the link to must-read articles in the sidebar), and have reconsidered. She states that modern fiction tends to have a very short first act, maybe only one or two chapters long, before moving right into the protracted second act.
I shortened my first act in this third rewrite, shortening it to two short chapters. However, I felt that was not long enough, so I have been thinking that somehow some of what has occurred since is really Act I material. It's not. My first act is just short in this first draft, and I'm not in the early part of Act II, I'm coming up fast on the mid-point of the novel.
It makes sense. It's also nice to realize I really am farther than I was thinking, once I redraw the lines separating each act. It brings the word count a little more in line with what it should be.
It's interesting that in spite of having a solid outline, what I have written meanders a lot while still fulfilling the key plot points, just not as I had envisioned. So, the story idea is one thing, the story reality (in this version at least) is another, yet the two are complementary.