For shits and giggles, next time you go to start it cold, BEFORE you touch the key, pop the top of the carb open and check the fuel level in the bowl. When I lived in FL, and parked the car outside for a couple of days in the summer, the carb fuel bowl was empty and the weak mechanical pump took forever to prime the line and carb. Problems went away 100% after switching to an electric fuel pump. Key on, wait 3 seconds for the pump to prime the carb, and start.
