Lightbox with a color corrector attached should give you more control. You can also add separate matchboxes directly to basecolor (or any of the other texture maps) to get what you’re after.
Thanks for the tip. I guess I try and want to do too much in the one action. I eventually split out all the bits out of Action and added what I needed upstream.
For sure. The lightbox and color corrector suggestions were to keep it all in a single action. Often times grading base color and using a lightbox on your light to grade the effects of the result before leaving action are nice hacks to get you where you need to go.