Originally Posted By DesertDog1:
If the canted front sight base was repaired, just put the rear sight in the middle like the photo above and go to the range and start sighting it in. I prefer 3 shot groups at 100 yards but there are many different preferences for sighting in, choose the one that makes sense for you.
Don't worry if you don't start with the MBUS exactly in the center of the rear sight, it won't matter because the sighting in process will correct it and place it where it needs to be for you.
Or you could get it all the way to one side. Count the clicks going back the other way, then go half that back towards the middle.