The forward track has two basic adjustments. The "A" adjustment controlsthe angle of the window at the wing assembly. Push it outward, and thewing assembly moves inward at the top. Move it inward, and the wingassembly moves out at the top. The "B" adjustment does the same thingfrom a greater distance. Move it outward with the screw adjustment, andthe window angles inward. The entire wing assembly also moves fore andaft in the door.