When you bring the CLIPBOARD up, where do you see it? Right in front, left,right on wing...The clipboard will cast a shadow, depending on time of day, sun position ect. Maybe thats it? I put my clipboard on right wing so If I do want it open all the time It is out of the way. I cant replicate a lighting difference with Shadows and REFLECTIONS on and then put Clipboard on same side of cockpit as the sun. Thats the only way I saw any change as described.