I hope someone can help find a replacement or used rudder sensor for the B&G Autopilot unit that is used on our 30 foot 1995 Grady White Marlin. The sensor unit look like a long rod with an arm that retracts inside to determine the angle of the engine that it is attached too. I have called B&G and they no longer manufacture the part and suggested I find a used part somewhere. Our marina mechanic tried a replacement unit, however it was not an exact fit and was too long. If anyone has suggestion where to find a used part or a true replacement part for this vintage B&G, I would be grateful. 