King Demon carb help please. Jet sizes?
Running a 28 ft. catamaran with 622 Chevy Tall deck 14-71 Moonyham Blower with twin King Demon 1095CFM carbs. She runs great but blows black fuel soot all over back of boat. It has .90 main jets in it. looking to lean it down without burning a piston. Any help would be great.