anyone used this? I bought it and have gone through the various tutorials. It's pretty good...but I have noticed on the scored range exercises that i never seem to range the target the way the computer program does, even though I am doing it correctly. it seems like the software progam is off. anyone else experienced this with this product? For example, I will use the standard mil-dot formula, plug in the figures and use the drop-down range card on the program, adjust for wind, then fire my shots. the program always has it about 200 yds off.