Does anyone know what model of quicksilver throttle control would have came on a 94 model Astro bassboat with a Mercury XR4 150HP? I need to replace the one that is on the boat and am unable to find one like it. It is a small square box with just tilt/trim on handle and Foward/Neutral/Reverse on handle. Key and choke are on the console and not on the control box. Any help would be appreciated.