I couldnt figure it out... I understand that once u get one end out, the other one, the one thats deep inside, just slides out. But how to get the first corner out? It seems that it is attached to an angle, which in turn attached to the body of the car. There are two nuts, on each side of the angle, one of the nuts seems to be welded to the angle and the other one is sitting so tight that when I tried tyrning it the angle would start bending but the nut wont let go. Am I doing something wrong?