The attached photos show the second inboard pylon. This is flared just enough to allow a servo to be mounted inside. It needs a bit of grinding to do this. The bottom of the pylon is covered with a G-10 frame, as are the two holes for mounting the pylon on the wing. The linear motion servo drives a pin which has to be bent and offset. You can see the mount tabs on the pylon as well as on the bomb.
Hope this helps.
Mike