Past, present, or future. 1+1=2

Bump map is fake => Past, present, or future.
Normal map is fake => Past, present, or future.

99.9% of all specular maps provided are just grayscaled diffuse maps.
The only thing they consume is more RAM. Delete them.
And no need to add them anywhere as Poser can make those internally with a node from the diffuse map if needed/required.

Drive a Blinn node from a blended diffuse map instead.

The only thing doing something in 3D space is a displacement map. 
Drive a displacement (as in my eample above), with a blended node from the same diffuse map.

 

Very controllable, very user friendly, and very predictable results.

Happy posering.
Tony

Poser 1, 2, 3, 4, 5, 7, P8 and PPro2010, P9 and PP2012, P10 and PP2014 Game Dev
"Do not drive faster then your angel can fly"!