Thickness Map? SSS setup with Metahumans

What am I missing? I have tried setting up Metahumans in 4.27 and 5, and while I see that SSS is working, there is no SSS thickness map that I have found yet, and it clearly states that there is one online.
So, I can’t get the Ears/thin areas of the model to create that translucent light effect.
As I said, I can see that SSS is doing the subdermal thing, but not any thickness. In the latest update of the creator, I see it with the new “backgrounds/lighting”
What am I not doing or missing?
Any help in this matter is greatly appreciated.