Sorry to be a thread stealer here. I have the classic Max Prop. I noticed the difference when I changed the pitch. I had replaced my Yanmar
4JH3E with a 4JH4E and thought I should change the pitch. When the engine
was installled we didn't pull the boat out of the water
so I didn't change the pitch to match the recommendations of Max Prop. The original setting worked better so this time when I pull the boat I will return to the original settings on the boat.
Between us there was, as I have already said somewhere, the bond of the sea. Besides holding our hearts together through long periods of separation, it had the effect of making us tolerant of each other's yarns -- and even convictions. Heart of Darkness