Apparently MotorGuide recalled a line of 36 volt 109 lb thrust tolling motors due to a build-in transducer that can leak. The local repair shop had a stack of the replaced lower units and sold me 5 for $300. If you are in the market, now would be a good time to check with your nearest MotorGuide service center. http://www.motorguide.com/index.pl/service_centers Have fun. Doug J