Worked a treat, Bill... thanks.

Now I can see even more clearly how completely erroneous my approach was in terms of sorting out what the shader nodes were doing. Your script cranked out 13 nodes. Trying to go backwards from the shader tree to try to sort out how it was created and why the nodes were there would have been impossible (at least, for me - this was an exercise in futility).

So, back to it. I'll see if I can somehow get spots in there again - I did like that, or perhaps come up with some skin-like texture of my own to somehow insert somewhere. However, it will have to co-exist (as in: values accounted for) with the spec and diffuse values... might make it part  of diffuse... kinda fleshing it out (so to speak).

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks