How do you set the wattage correctly?
Look at the tiny writing on your coil: it’s written right there. If it says 40-60W, don’t try to be a hero at 100W, unless you enjoy the taste of burnt tires. Start low and move up slowly until you find your sweet spot.
The ideal setting depends on your wire's heat coefficient. Too low, and you'll flood your coil (leaks) because the liquid isn't vaporizing fast enough. Too high, and you'll cause a dry-hit due to insufficient wicking. Always respect the manufacturer's range.