Thanks again, guys.
Mikel, I decided not to redo that one area. Different color value or not, I like it as is, and it is some of my best work on the model.
Started my first lines on the antarctic circle - first lines, and first screw-ups! Work in this region is physically the most awkward and difficult. There is a certain degree of sloppiness here, but there is also some on the original, so I can live with it. And conveniently, the higher up you go (and the easier it gets) the more the eye sees. The really difficult places to work on are the hardest to view.
Anyway, the lines - as presumed - really add a level of dimension to the beast.