rebuilt carbs on 78 115 hp johnson motor model 115ETL78C wasnt getting enough fuel for wot rebult carbs mtor runs great at low and high speed but noe i have to prime with mix gas threw the carb to get started will run fine untilit sits for a long time ididnt replace the fuel pump yet but did replace primer bulp but i cant here gas in carb when i pump up the bulp any insight what i should check for or maybe missed thanks