docrmk and someone else was explaining to me to remove the allen screw, you can pull the slide out an adjust the needle clip. if you look at arrow #1, you can only get to one allen, the other allen is under the arm. if you look at arrow #2, It makes me wonder how the slide is going to get past the rack lever??? do you remove the phillips screw and twist the arm up, look at the second image, I got a lot of oil in the air box. what am I missing here.