I have a 95 fourwinns 238 vista with an OMC 5l efi ford motor. It runs smooth but I am only getting 4,00o rpm at WOt and it should run out at 42 to 4600 rpm. Also I brought the boat in fl and I live in mt so I changed the pitch from a 15.5 x 17 to a 15.5 x 15 hoping this would solve the...
