Deadeye, I think you may have it! I did notce today at the range I was using just the tip of my finger at first, when I was having this problem, which was probably pushing the "blade" over to the side. I consciouly started using the thicker pad of my finger, and I didn't have the problem after that. I didn't think it would really make any difference, but then I don't really know just how the accutrigger is put together. I'll definitely try that and see. I wonder if I can tell by dry-firing whether the firing pin is falling or not. I'll probably hear the difference? Or maybe it'll be harder to cock it if the firing pin is down? I'll go check this out right now....

Thanks for the quick responses!