Does anyone know if transducers are available for Standard Horizon, Wind speed and depth instruments. A buddy of mine has some older Standard Horizon instruments on his boat, the displays work, but the readings are way off. The depth shows 9.2 ft all the time, the wind shows a different direction than it is blowing, 90+ degrees off even when anchored. and speed doesn't register anything even when turning the paddle using compressed air. Are they shot or are transducers available? I've been to the Standard Horizon web site and can only find new instruments. I've also looked in defender and can't seem to find anything. Can anyone help?