A repair man either lost or broke something on my trim sensor switch. I have a 1986 Bayliner with a Volvo Penta AQ131A. The black plastic box that holds the relays and sensor switch is just sitting on top of the tilt rod. The two long screws are still there but there is nothing on the bottom to screw them into and hold the unit down so that when you lower the unit the rod makes contact with the sensor and shuts off. I can't find a picture or anything to show me what is missing?