hi Larry
you should be calibrating with 422 when you can.
Samsungs have rgb cms controls (not Color / tint / brightness). If a RGB is on its xy access but too dim or too bright, then add all 3 rgb controls to make brighter but keep in the same x y space.
I would not use the blue only mode for anything. I would set the color control based on red at 21% of white, however, I would set at the center position and then use the CMS controls on this display.
There is a 2 point / 10 point selection in the menu system.
let us know how it works out for you.
