Ok<br />I went out saturday on a shake down cruise on lake Erie. Boat ran great,200Hp Omc 1981 stringer. My question is when I was coming up the channel I noticed a different sound other then the motor idleing nothing grinding or scraping just a different sound. I didn't feel anything in the steering or anywhere else. It came and went,boat shifted great no problems, I was just wondering if there was a drive problem would I feel it? <br />Thank's<br />Beef 