Problem with my Trinitron monitor...blurred edges?

[Prototype]

I just picked up a refurbished Dell UltraScan P991 yesterday.
Right when I turned it on I noticed that the corners of the screen looked slightly blurred compared to the rest of the screen. It's not super blurry, but enough that I noticed it...eg. my ICQ icon in the bottom corner doesn't look very sharp.
I've tried adjusting the brightness, contrast, convergence etc but it remains the same.

The specs for the monitor say it has a .24 dot pitch in the centre, and .25dp around the edges...could this have anything to do with it?
Are there anymore tweaks I can do, or is this the sign of a damaged monitor?

Thanks for any help or suggestions.

 

[Prototype]

*bump*

 

[LXi]

Um... did you wait for it to completely warm up?

 

[Prototype]

Yah. It's been on for 2 days now and is still doing the same thing.

 

[Prototype]

On further inspection, I've noticed little wavey lines in the corner of my screen. Kind of like the ones you'd see with low refresh rates, but very small and isolated to one area.
Anyone have any idea what's going on?

 

[EdipisReks]

are there any magnetic fields around the monitor? unshielded speakers, microwaves and power transformers can all screw with monitors.

--jacob

 

[billyjak]

Adjust the Moire' setting in the setup

 

[mcveigh]

try this