I got an unused Yamaha Saltwater series prop a few days ago. The prop I moved from my old 2004 3.3L motor is a 15 1/4 X 19 and it was too much for the new 4.2 Liter, due, I think, to the difference in final drive ratio. I got a very good deal on a 15 1/4 X 17 since a guy had bought it for his...