Have a 1998 Ranger 692 with a 1995 Evinrude 175 Intruder. What is the operating range for this motor? All I can find is WOT max is 5500 rpms but what is the range?? 5000-5500??? What I am getting is 5200 rpms with all gear and batteries just under 1/2 tank of fuel one person(driver) and 2...