The thing about writing is that sometimes the organism, your brain, tells you what you need to do without you knowing it.  I took some time away from the research, and within a few days, feeling like I was sluffing off, the story came flooding in.  Subconsciously (subjacently) the brain knew to stop and let the story work its way through.  Although there is still research to be done, now it is more focused — I know for which sources to reach.