1978 25.5 ftCarver Santa cruise cabin cruiser. Duel helm set up both mechanical lines are working. The part where you shift it from top or to bottom is not working correctly and at the same time connects both helms for steering to the stern drive(Btw is a volvo penta?) It has 3 square tubes in a aluminium box that top rail for top helm middle goes to stern mechanical line, bottom of square rail is for cabin steering. Middle square tub has shifter engages top and bottom helm. I don't know exact name for it or terminalogy, whats the name , maybe systematic it is why I'm here?
but with your , with the name I can get a break down of it and then I can fix it? hopefully ,maybe I can finalie go fishing