after a few fires when the tank warms up, pressure builds up in the tank, which pushes more liquid to the coil;
maybe you just need to vape at a lower wattage at the start; if the tank warms up and starts flooding the coil, then you raise the wattage; but if you start off at the higher wattage when the tank is cold, you might just be running the coil too hot.
Excellent point. Also, as the tank warms so does the ejuice, which thins the viscosity, making it easier for the wicks to draw juice to the coil.