CC CAS is shiny but spec is black

Hi. When alpha has nothing in it, it's not saved. So the whole background is read as opaque(pure white). To make a "blank" specular, fill both rgb and alpha with black but put a tiny white dot somewhere in the corner on the alpha channel

the type of specular your item gets depends on the channel, it probably floods everything that is empty with green (as in, everything with white in the green channel). Thought putting a dot in the alpha would result in the black dot, but probably not, so try putting a white dot on rgb as well, in the same place ( or just use png, transparent background, white dot in the corner )

The should be no difference it this case
Just in case, check if you are editing the file that is in the right (mods) directory and not somewhere else.
Here are the files, they work for me (if you are using textures of the default size, choose spec1024x2048, this is not the real size of the image, just less confusing for people downloading it)

I’m on mobile rn and can’t check the files again, but if the map does not work, it’s not the specular. What did you clone? Does it have any other map beside specular and diffuse? Did you make a uv_1?

Yep, that's the incorrectly saved normal map.