Can any one tell me if I can use a different transducer other than model XT-6-TB-90 that came with the unit when I bought it new. I got a small log jammed between the motor and the boat and it broke off the transducer and just replacing the mount won't help. A new one costs $161.00 but there are others (cheaper) that may work just with 1 or 2 beams. I really only use it to find holes an debris.