Nothing to it. I just made BV77 a Moderator to see if his new permissions set would fix things, and it did. I can't just make everybody a Mod, though.
The thing is, while I suspected that it would work, I can't figure out exactly WHY. The permissions set isn't much different from that of a standard member, and of the differences I can see, none of them seem to have any more effect than the others.