MLW,
You've become the new Weathering Wizard for this forum (esp. the cylindrical grain hopper a few pages back).
Steve, your BB gondola looks exactly the way I originally wanted my mill gons to look, when I weathered them 10 years ago. Needles to say they didn't turn out anywhere near as good as yours did. Guess I'll have to add a re-weathering project to my 'ToDo' list...