So I spun the hub on my SS viper 3 blade which would run about 5400 rpm @ wot. It's 13 7/8 x 17. To get me by I got the closest match available at the time, an aluminum hustler 3 blade 13 1/4 x 17. Its only hitting around 5100 now wot. I believe I can still exchange it. The motor is a 115 etec, which I believe the wot range is something between 5400-5600. Looking for advice on which way to go, changing diameter or pitch, to get back in range and better accommodate for the flex of the aluminum.