Lee, I had to downgrade my firmware... Mine was buggy to begin with, but I thought it was due to working in the service menu.
I do note that 1005.x is faster scrolling on the menus, faster HDMI handshaking, and that I have less of an issue with Expert modes. Also it kicked my settings somewhat back to normal.
I was tired of resetting and not getting anywhere after my settings got messed up, so anyway I am getting my TV setup again and noted that the grey scale ramps are grey with a light tint. Possibly from the hight and sitting angle. Though OEM was blue/green.
I am now at 155,154,155... it is difficult to get all at 155. Though it is good enough for me.
I am thinking of rewrighting the calibration to use calibration in the expert mode as those who have 1006.x or 1007.x may find it difficult as I did. Not that I just calibrated for one set of settings... I tried every LED brightness setting, and RGB starting points I could imagine using.