i just changed the trans filter on the a4ld, and i noticed a adj. nob on the side and a screw plug on the other side.does anyone know what those are for, here are pics http://i383.photobucket.com/albums/oo276/guagke/PICT2036.jpg http://i383.photobucket.com/albums/oo276/guagke/PICT2035.jpg