This servo is harder to see in the visual clutter. As in the rear (roll) servo, it’s a black box. In this picture, it’s in the bottom/left portion of the screen. Moving from mid bottom to middle of the image is a dull grey rod just parallel to the rib with some nut plates: that’s the pushrod. It’s connected to the bottom of the control column. To tell the truth, I’ve been worried about this page for a while, but I was pleasantly surprised to discover it wasn’t that hard to install.