Scott, I think what you're seeing is normal. It's a subtle (but definite) warmtone effect. If you enlarge on a sheet of the regular multigrade and compare, you'll see the difference. If you want some more pronounced warmth, I recommend the DuPont 6T (thiocarb) toning system--it'll give a wide range of obvious warm tones. Are you finishing with selenium? That seems to deepen the blacks and slightly increase the overall warmth.