Hmm...I've always been picky about using the extra diffuse and specular nodes in any other socket besides the alternate_diffuse and alternate_specular sockets. I was under the impression that plugged into any other node, they would render improperly. On another note, I was always under the impression that the nodes found under the "diffuse" and "specular" cascading menus could be plugged directly into their respective sockets. However, I've been finding that they don't look right, and if I first plug in a "diffuse" node into the socket, and then plug in said node setup, it seems to render correctly.....What's the proper use of on nodes such as "skin" and "fastscatter" and the like?