If I have a grayscale tiff, and I try to apply a black percentage to it, when I print it or export a PDF, the image appears as 100% black. This only happens with the default black, if I use a spot color, even PMS Black, everything works as it should.

Freehand MXa
Mac OS X 10.3.1
PowerMac G5 1.8
1.5 GB RAM