I recently upgraded to a new 2017 iMac from an old 2008. I noticed in PS6 that the textures of my custom brushes (that were from my 2008 machine) are all very small. I'm assuming this has to do with the pixel depth of the retina display. I thought that scaling up the textures 200% would fix the problem, but the textures still look small. What specifically do I need to alter to get my old custom brushes (especially the textures) to look the scale they did on the old machine?