I was wondering if on the 60-5.5hp Evinrude Fisherman, If you have to remove the power head to get to the water pump impeller like the earlier models. <br />Also on 1 site I found covering older models, he recommended putting a thin layer of silicone on the matting surface between the lower unit and the mid section. <br />Is this advisable? If so what type? Silicone grease, or sealer (adhesive)?<br />My concerns with sealer:<br />Put on properly it is a formidable opponent for future removal.<br />The acid in general purpose silicone adhesive is corrosive.