in these hot summer days i experience hard restarting: must floor the pedal and go with the starter motor for too much time. should be due the gas evaporation in the carb, so (i figure) the long starter running it's needed to pump fresh fuel from the tank..correct? do an electric fuel pump can mitigate the problem? any experience on this? note that the car goes very well, carburation it's ok, ignition works well..