Had spring tune-up on used boat that I purchased in fall. Mechanic said that the prop was the wrong size. <br />Current boat specs are : 19' 1985 Grady White Tournement, 1985 140 hp johnson, WOT 4600 rpm. speed 31 mph at WOT (with 3 people on board) using gps, current prop size is 14.25x21 SS...
