This information might help: I know that some of Carrara's shaders have a nice bump implementation (like the Cellular shader), but others use a default implementation that depend a lot on the scale of the shader (like the brick one). When I did Veloute, I made specific developments for the bump, so they usually give better result than the Carrara one's. What you could try if you want to use the Carrara brick shader in the bump channel, it's to use it after the Veloute Filter shader: it should improve the bump. Julien