Just wondering how these things work. I have a Simmons 800, and was using it on my archery hunt. I tried twice to get a yardage in the thick of the woods and just got dashes. I had sunlite shing in my direction, is it the sun or is it the thick of the woods causing the obstruction so that it doesn't work? Anyone know? So I missed a chance at a more than likely sure kill twice, due to it's malfunction. By the time I got my yardage guessed they were gone.