Please explain this to me....Say i have a sight picture with a snowman with the center bead and the front and my gun shoots flat. If i raise the comb so the gun shoots higher I lose the snow man and now have say an inch between the beads. How do you make sure your set up is the same every time you raise the gun to your cheek? I like to know im exactly the same everytime but with space between the beads it seems more like a guess. any thoughts considering I don't have and adjustable rib?