I have a 91 Mariner Bigfoot I purchased in Fl and brought to New Mexico. It ran good there, but at 5000 ft I'm having some problems. 1st off I think I need to reprop due to altitude change...anyone have any suggestions? Secondly, it ran great for the first hour and then it died and would not run above idle. I'm going to rebuild the fuel pump, clean the carbs, new fuel filter and new fuel tank and hose, but anymore suggestions on making the transition to high altitude....thanks!
