Share 'multiple textures and channels'

Related to my last post, I'm trying to make a "complex" material for a section of runway and having trouble getting the different layers of mapping to work together as I expect.  Just focusing on the diffuse channel for now, I'm using one texture map inside a Blend Texture, to combine my basic asphalt image(mapped using WCS) and the white painted markings. The blending texture is simply UV mapped…