I have stern mounted Lenco trolling motors (2) that allows me to reverse the airboat. They are controlled with a hard wired 4 way joystick that controls the motor. ( forward, backwards, left and right) Water got into the joystick and I am trying to find a new one and not being successful. Any suggestions on where to find one? It is rectangular with the cord coming out on the side. No name or markings at all.