I have an older ('88) Minn Kota 565 bow mount trolling motor that quit working yesterday in the "mom" or momentary(?) position in which you have to depress the pedal to operate, but it works fine in the "constant on" position. I've checked all wires, etc, but by no means am I an expert - So I ask what I should look for to determine the problem? Any help would be appreciated. I'm to the point of deciding whether it's time to just buy a new one, but dang are they expensive. Thanks in advance for any help.