I have 2 Minn Kota trolling motors and both have only 3 speeds that work. Speed 1 does not work, speed 2 go 1600 rpm, speed 3 does not work, speed 4 goes 1400 rpm, and speed 5 goes 1900 rpm. Bought a new speed switch for floor control and did not help, still same problem. Any help would be appreciated.