I think "E" suggests you put the scope on infinity. I hope I am not messing up his idea. Now you point the scope at the sky and look though it. If the cross hair is not immediately sharp turn the ocular one way or the othe till it is clear. Look away often and look at someething else. Then recheck the crosshair. This may take a couple minutes or more.
Once you have the crosshair clear turn the ocular till it barely becomes fuzzy. Now turn the ocular the other dirction counting the turns until it becomes clear again and then fuzzy again. Now turn the ocular half way back to where it was fuzzy and you should be in the center of the clearest the crosshair is going to be. I hope I got it correctly from "E".
Now set the A.O. for 100 and check the results. Let us know how it works.
"E",
If I messed up give us a hand.
