I have a Volvo Penta AQ125A motor and 270 outdrive. My current WOT is about 4400rpm. Specs say 4400 - 4800. <br /><br />I am running a 14x19 VP 814633. Propco shows their replacement as a 14 1/2 x 19. Since I'm so close to the low end of WOT, will the extra 1/2" of diameter make any difference? Propco says it will not make any difference. Are they right?<br /><br />Another possibility is to go to their 14 3/4 x 17. Would this be a better choice since I'm at the low end of WOT now?