Gang need help how do I get the large apature to rotate into position. There is NO setting on my A2 sights lower than the battle setting of 8/3. I have zeroed it with the small apature site as recommended but I just can't get the "battle site" into position. Please help. Thanks in advance DAROGUE1 Any other tips are also welcome. I know about AR15.com thay don't have it either unless I looked wrong.