A little more progress, slight weathering applied to the cement pallet curtain wagons. Lesson learned, weathering powders, dry or in wash solution do NOT take to gloss varnish surfaces (ie curtain sides in my case). A mix of weathering powders and airbrush, hand painting for other details such as buffers, coupling hooks, curtain tension straps, etc. All that's left to do is the aluminium straps need greying, and add the vacuum pipes and sole bar transfers (ie chassis numbers).