1980 Evinrude 150xp that has three Tri-Jet<br /> carburetors. That would not run at wot,<br /> had carbs. apart and Clean the orifices<br /> out now runs good. The orifices in it had <br /> 30c on them,the manual has at sea level<br /> on high speed use 49c. I am at 760 above<br /> what would be the differnce <br /> in performents? 
