Dumb question guys. I have a minn kota 3hp trolling motor that I want to remove the prop on. It has a flathead screw in the middle, with a plastic wing nut around it. My questions are, is the a normal screw or counter clockwise screw, meaning is it clockwise to loosen it? And the second question is, do I loosen the screw first, then the wing nut, or not? Thanks..