I have a 1988 harris 28ft flotebote with the 3.0 i/o alpha one. The engine runs tip top( new cap rotor, plugs, wires, points), tuned it up, dwell and timing are correct(6btdc and 32 dwell). purrs like a kitten. Rpm at wot is supposed to be 44/4800rpms. I just switched props AGAIN to a 3 blade...