Hi again airguy,

I did a recalibrate with the lights off and used the simplicify function on a one pass scan of the default test item.
You can see the item in the camera window too, I was using medium object with low res.

one-pass-stanley-lights-off-cal-medium-rotate-simplicify.jpg one-pass-stanley-lights-on-cal-medium-rotate-simplicify-scan2.jpg

I also think the first one which was the original calibration has better detail than the one with the lights no (second image), and is less overexposed.
I also seem to think that setting up the right light balance for your scan object is important, whether this affects the white balance calibration after I do not know.
It might be useful, if there was a histogram, showing the light levels, or an exposure meter like you get in photo editing software, as it would be easier to see the option with the spread of light. Having said that if the camera windows were resizable, then you could see more detail. :!
What do you think?
Hope this helps

Mike