Here's another set of images.  On the left, The reflection and bump channels are texture mapped (object parametric), and highlight is plain-nothing in the channel.  The second shows what happens when I put a blocks function in the highlight channel, with a plain white color, loaded as a 2nd material layer-(sphereical mapping the 2nd layer)-this image--the "highlight channel" is loaded below the regular layer.  When it is loaded on the top, the band becomes light instead of dark.  The third image shows just the blocks funcition loaded into the hightlight channel, plain white, no reflection or bump added.  The images I sent out originally shows what happens when I load the texture map into the highlight channel--**only in this channel**, mapped parametrically, it is way distorted.