1976 Johnson 135h outboard:<br /><br />I checked the lower unit prior to using it this year. The fluid was a dark "evinrude" blue color... I ran it once, pulled the top screw (curious for some reason)and now the lube is a "putty" gray color. It is NOT a milky or creamy color like what I would expect to see when water is in the oil, but concerning none the less.<br /><br />I am unable to get the drain screw out of the lower unit... it is a little chewed due to the previous owner using a too-small driver on it... ANY suggestions as how to remove it w/o buggering it up more?