Tame out-of-gamut colors
Next, choose Select>Color Range, and in the Select menu, choose Out of Gamut, and Click OK to load a selection of the out-of-gamut colors. Then, choose Image>Adjustments>Hue/Saturation and move the Saturation value to #10, and click OK. You should see the gray areas get smaller. Deselect and repeat this procedure using the same #10 Saturation setting until the gray color indicating out-of-gamut colors is no longer visible.
As a new viewer of this site I am a little confused by this page… is this an ongoing project and if so how do I find the start of it to catch up?