Thanks johnrellis, but I used that reference and deleted all the preference files listed there (see original post). Some preferences persist even still. I believe there must be some files missing from that list? Or there's some other way that my preferences are sticking around?
I'll try to change the title to be more clear about that. Thanks in advance for any insight.
(--edit-- I can't change the title of the original post...)
I just learned something new: OS 10.9 changed the way app preferences are handled, and you can't just delete the .plist file anymore. See this article: