Finished up the smoke boxes on the GN O-8 and SP AC-9. Like the DM&IR yellowstone, little of the smoke box shows on the AC-9 so only the sides and front are painted.
Started hand painting the fire boxes and piping on the multi-colored boiler engines.
'Shot' the maroon on the DM&IR caboose and cab roofs of those that are Sacramento gray.
With the yellow, had 4 spots where there was some overspray that got by the masking and onto the yellow but able to easily remove it with water and a tooth pick, before baking.
Should be no more masking and air brush painting: just a lot of hand painting, then add decals, then dull coat all parts and finally, install all those marker light LED's, sound and assembly.