Since this is my first proper model, and I haven't touched it for months, I keep finding stuff and thinking, HUH? For example, this piece in the tail. It appears I've applied a smooth node at some point, but, since the piece has flat faces AND curved faces, some of the geometry doesn't actually do anything to alter the shape and is pointless.
[IMG][/IMG]

So, I've manually deleted unnecessary edge loops and verts:



Now I gotta go see if I've done anything stupid elsewhere.