I have been using Shooter for a while now and it is a great program. I am having problems with the "sight height" setting. If I set it to 2" which is the measured height of the bore to the center of the scope and zero at 100 yds it still tells me to drop down .4 mils. If I set it at "0" and zero at 100 yds then it stays at zero. Shouldn't your zero stay at zero? What am I not setting up correctly? Thanks!