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Check out new HO and N scale freight cars and locomotives with Model Railroader associate editor Cody Grivno. Cody will also give you tips for weathering roadways with paint and an airbrush as he puts the finishing touches on his N scale T-Trak module. Reader question topics include the correct shade of blue for Model Railroader‘s Milwaukee, Racine & Troy locomotives; using isopropyl alcohol as model railroad track cleaner; and where to find scale bigfoot figures.