I have a Blue Mountain EFIS/One installed in my IV-P. The display is fine while in the hangar, but is almost unreadable outside the hangar. I have the glare shield painted flat black and the display intensity turned up full. It is not in direct sunlight and I have installed the anti glare film suggested on this forum. Any suggestions on how to increase the brightness/readability of the display?

Giff Marr
N229GM