Uneven Backlight Fixes Itself?

Okay, when I first fired up my MBP the screen looked horrendously lumpy! The backlight was incredibly uneven, with shadows all over the place.
After three days of using it, the lumpiness has all but disappeared, and the screen seems fairly even bar a slightly darker strip about third of the way up the screen.
I still have a bright 1/2inch strip at the bottom (which I believe is light spillage from the backlight tube), which is a bit annoying but not worth sending the machine back for in itself.
So (not that I'm complaining) can anyone explain why the uneveness of the backlight would improve?

I think the best way to see where you get light leakage is to take pictures of it with your digital camera, or look at the view area of the camera. It sure reveals a lot spots and leaks.
But that is another story. I think its not so much that it improves, I think its your eyes playing tricks on you. Maybe there is improvement but, for the most part its just your eyes. Also hold the scree up to a mirror and you'll be able to see more lighting problems. It's really weird how when you look at it from a different perspective it looks different.
I don't know thats just my 2 cents. I have gone through swapping 10 MBP and I've settled with the most recent one. Its not perfect by any means. The battery feels loose but I'm willing to forgo that for a decent screen. Which this one is quite good compared to some other ones I had.

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    Message was edited by: Scottishengineer
    Message was edited by: Scottishengineer
    Message was edited by: Scottishengineer

    Good Afternoon,
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