Published July 18, 2017 at 895 × 832 in My P58, P48, P52, P66, TM256, TM258, TM260, TM270W transom-mount transducer is not working well at speeds above 10 knots. What can I do? Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment * Name * Email * Website Save my name, email, and website in this browser for the next time I comment.