I was taking my wife and kids out on the lake yesterday so I decided to switch my new 10P prop for the stock 9P prop that came with the motor. When I gave it a test spin, I noticed that the prop was scraping against the foot housing. I pulled it off to find that half of the prop edge had wear on it as did the inside of the foot housing. I put the 10P prop on and it spun smoothly. It doesn't look like the prop had been smacked by the previous owner. There are no major dings in it. Because the 10P turns smoothly, I think it is just an alignment issue with the old prop, but it is scraping the foot on one section too, which leads me to believe the shaft may be slightly bent as well. Any of the prop guru's know what's up? I don't want to put that 9P back on unless I can get it to spin properly. Here are some pictures for you to look at.