I when out today and was looking at my other aluminum jon boat it has a 2D transducer mounted on the trolling motor and right around the temperature deal in the bottom of the transducer it is leaking something that looks and feels like black tar. Is this transducer going to be any good when I take it out fishing? Why would it be leaking as I have not even used this transducer very much and it is under a shed. Is it a heat deal or maybe it froze this winter I would like to know what I may have done wrong. I sure would not want my HDSI transducers to do the same on my other boat as they are pretty expensive to replace. Thanks for any help and information about this.