I had a hell of a time yesterday with my Competition Electronics ProChrono Digital Chronograph. I've had it for a few weeks and used it a half-dozen days. It has worked great on overcast days. It had a little trouble one day when it was sunny and the plastic canopy arms cast a shadow across the top. I just turned it a different angle and it worked. Yesterday, it was about an hour before sunset and I went out to use it to measure four groups of new handloads. So I set it up in the shadow of a hillside. I figured that way the lower-angle of sunlight wouldn't trouble it. But apparently, it was too dark to measure anything. I had to move it to the sun to get any measurements, but then half my measurements were way off (253 fps instead of ~1100 fps). Am I just asking too much of a Chrono to use it in these conditions or can I get a better Chrono? The store will let me return this one, but today is the last day I can return it.