Thanks for doing this Keith.
the set-up you have shown in Print Tool matches what I have been seeing and doing.
I made my ICC from the lin2 curve that you worked on here. It does 100% increase the highlights.
Could problems have arisen from making/linearizing the Quad in Windows, then dragging it over onto the Mac?
When it comes to remapping the curves and doing some new linearizations I’ll do it all on the Mac
Cheers