To obtain consistent results with your distance wedges, I recommend concentrating on swinging through the ball to a high finish. It also helps to visualize the club traveling its fastest a foot or two past the ball, as opposed to right at the ball. We want to develop a shorter backswing with a longer follow-through. This will result in acceleration through the ball and will lead to more consistent results.
One problem I see consistently is that golfers focus on hitting the ball instead of focusing on executing a proper swing. By focusing on hitting the ball, many golfers develop a long backswing with a short follow-through. This results in deceleration through the ball, which causes inconsistency.