After set and looking through scope and have used the side parallax adjustment to take out parallax are you focusing on the reticle or target when you are getting ready to take the shot? Only one can be in perfect focus and it should be the reticle, which is what you should be focusing on for the shot.
For setting the reticle focus I generally have the scope power near max so I can see the reticle better. Have it facing the sky, but not sun obviously, or a white wall. Look through scope at only short periods of time, 2-3 seconds, and adjust in small increments. Looking through for a long period and the eye will adjust making the reticle look in focus.