P3 at narrow setting does not display evenly

[Gary Smith-2]

I've discovered when I adjust the span to its narrowest setting, the
outer sides of the screen in both the P3 and SVGA output fade with
the center being the brightest. When I'm looking at the perimeters
for weak signals this becomes somewhat problematic. I don't see it in
wider settings.

http://s1295.photobucket.com/user/KA1J/media/P3_zps5f68799b.jpg.html

or a shorter URL is

http://tinyurl.com/kkne9ww

Any idea how to get this to display evenly?

Thanks.

73,

Gary
KA1J

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