Thanks, good to know. What's weird is it only happened on the one end of both shells.
It turned out that this support "fuzz" is soft, much softer than I expected. I could scrub most of it off with a good brushing. There's still enough of a footprint, however, to obscure the details at the bottom. Might need a few minutes of X-Acto time to freshen the panel lines. I was thinking about slicing off the grab-iron ladder, anyway, in favor of individual wire grabs, so this is an opportunity for a little light sanding.
Oh... let me clarify... this is not my artwork. I am in correspondence with the fellow who did it, however.