I have 2 Michigan Wheel Vortex Props with the interchangeable Hub system. This weekend at slow speed I hit a rock taking a chunk out of one of the blades. So today I bought an OEM Evinrude/Johnson BRP Aluminum prop. The guy at the Boat Dealer said I could just put it on useing the Prop Nut. But looking at an Overtons catalog They talk about a Thrust Washer. I Don't think My Mich Wheel Prop had one of these. I put it on tonight with just the Prop Nut. Do I need some type of washer too????? Thanks Again
