Hello again, I recently purchased an evinrude 9.9 , The prop is worn and I have a few questions , the prop is missing paint around the edge of the fins, and it is a bit nicked up on the edges also , how much will this effect the speed and performance?...keep in mind the motor is a 9.9 hp and its on a heavy boat so it wont go very fast to begin with ...(hp limited lake) thanks for any replys