Hi,I'm new to this so here's a little background.<br />I have a 1973 (50373) 50 hp evinrude with a bigfoot(?) lower unit, 13 3/4x15 prop. it runs good in a barrel or with muffs on, when i put in in the water it runs rough,wont idle and no WOT.<br />can anyone help?<br /> Also, I have a 1978...