Hello,<br /> I have a '96 Evinrude 88sp. I was going about 4000 rpm with a regualr prop and hit something submerged in a muddy area. My wife thinks she saw a plastic lawn chair. One blade got a good nick in it. I motored home at about 200 rpm not knowing I had bent the prop. So I really have two questions:<br /><br />How do I know if the prop shaft is also damaged?<br /><br />Did I cause any damage running the prop at 2000 rpm for 10 minutes. <br /><br />I didnt notice any vibrations. I only realized the damage when I got close to home. The engine itself was vibrating a little. Just coincidence. I just changed the lower unit lube today. Will that help identify any problems. I will be buying a new prop. Should I keep the old one?