Hi Grady, they were there on his material panel, and yes he used both Specular IOR and Subsurface IOR when assigning materials, i wanted to replicate his exact settings so i had that baseline, then i could adjust for personal preference, but couldnt find the matching fields in 4.5, i did know there were some changes that put most into the Principle BDSF Node, but they aint all there and they arent all the same even if the text says something similar or even the same, it is a little confusing