Hi I have a 91 Malibu flightcraft outboard boat. 21 ft long. There are little mini swim deck/ steps on either side of the motor with a hard plastic/ rubberized type surface on them. I believe they are moulded in, but when they get wet, they leach black onto whatever touches them. Which equals black water drips and foot prints all over the boat and upholstery. Does anyone know if there is a way to seal them so this stops happening? Or can they be replaced with new ones some how? Or am I just SOL and get to deal with it? Thanks