In many purchased / downloaded texture sets, both displacement maps and normal maps are included, and the smart material doesn't look right if one of the two isn't used. Unfortunately, I'm new to building smart materials and can't figure out how to do it. The best I've come up with is making first layer with displacement map, and another layer with only one channel, plugging in the normal map. For the 2nd layer described, I increased its intensity to 200% and lowered its opacity to 20%. Tha