Part of my problem with plot has to do with me revising my outline last minute on 10/31 and not being entirely finished. So I had lots of good plot hooks early on that need more chapters later on that weren't on the outline. I've also learned that my chapter summaries were a little too brief and narrow for what I needed for a full chapter. Blargh.
The other challenge? Part of my story involves a sort of comedy of errors involving people in love with someone that doesn't reciprocate their feelings. (It's less of a love triangle and more of a love Z.) And it takes place over the span of about 20 years. Which I guess can happen, but on a certain level feels like, "Really? Are they all that belligerently stupid?" So I've veered off of my original plan a bit. We'll see how it goes.