Thanks - I had really cranked up the specularity on this one, and I suppose the extra brightness requires the darkening of panel lines, etc - they're being overpowered. I might try backing the Spec down a little, but regardless I'll also darken the panel line layer as you suggest.
Anybody else interested in doing skins for the Flying Fortress? Seriously, it has the most gorgeous shape of any WWII heavy bomber, and there are many problem skins that are up for adoption. The only problem areas on the skin are stretching issues around the engine cowls. I'm also working up a green drab skin from the 452nd BG, and if I get that one looking good enough, I'll feel ready to adopt a few skins to fix their glassy appearance, both green and natural metal.