Hi
I tried the channels you mentioned, but it doesnt quite work.
The files, as well as a gif showing how it should look are here: https://gamebanana.com/models/3434
I have spoken to the file creator, but unfortunately, he doesnt work with Cinema4D and couldnt help me!
I would really appreciate it, if you could tell me what to do.
No worries! You are just trying to help! Unfortunately, as far as I can tell, the video doesnt seem to look at which channels one assigns which textures to, but I will keep researching.