Would like some input from the experts. I have a Lund Rebel 1650 xl ss. 90hp merc 4stroke. Boat came with a 13.75x15p 3 blade prop. Dealer admittedly put the wrong prop on. 6200 rpm and 35mph/GPS. They sent me a 13x 17p 4blade Spitfire to try. Got out today and its like a different boat as you...