The factory OJ's were the sheot at the time, now they are considered sheot. They can be inconsistent compared to a CNC machined prop. You might think about getting an Acme 3 blade. i am waiting to have enough spare cash to buy one, and a dry suit, and a sub amp, and a 12" JL W6, and build a garage, get a supercharger kit for my Marauder, blah blah blah. Money was made round to roll and flat to slide:))