I'm sorry to hear that you're having a hard time adjusting the picture.
Are they colors and maybe what could be described as pixelation that don't belong there?
Also, have you tried the HDTV Picture Settings forum to see if others who might own your set have posted their best settings?
The picture often seems to be washed out looking, with with splotches on peoples faces. No matter what I try I can't fix it. Does anyone have any suggestions? How do I get deeper colors with normal appearing faces on this TV?