When I first got my Pioneer SD-582-HD I tweaked it in the service mode because I had grayscale problems, a slight purple hue on low IRE blacks and grays. For the past 2+ years it's been pretty good and I almost never noticed this. I still don't notice it on DVD's, (except on The Good Girl the blacks had a strong bluish hue, but I understand this was a problem with that particular DVD). But recently, on a couple of cable channels I have noticed the old purplish hue again to a slight extent, like TNT I watched Crossfire Trail recently and there was a bit of this. Can the source have an effect on the grayscale? Also, I forget, when adjusting Rcut, do I want to decrease the value (more negative) to reduce this effect or increase the value, (less negative). I was thinking it may be time to get out Avia and go into grayscale again and do a little tweaking.