I WROTE ABOUT MY NEW PROP FOR MY FORCE12O. IT IS A 21PITCH RAPTURE. i CHECKED MY MANUEL AND IT SAYS RPM SHOULD BE 4750-5250. AT WOT I'M GETTING ABOUT 4800 RPM @38MPH. DOES THIS SOUND RIGHT ON A 19' SEA-PRO BAYBOAT WITH A AVERAGE LOAD? MAYBE I'M EXPECTING TOO MUCH. I THOUGHT OF GOING TO A 19PITCH BUT MAYBE ITS BETTER TO STAY @4800.