I'm running an eleaf istick 30w with a kangertech 1.2 ohm coil. I'm not getting much vape when I pull lung hits and it's always harsh. Used to smoke cigaraettes and I'm using juice 12 ml nicotine. I'm an amateur at best in the vape scene but I'm am trying to get the smoothest pull with a good cloud and have to cough when I exhale. I'm trying different airflow but not sure which is best. I also use a kangertech subtank nano. I can seem to find the wattage for me either. Any guidance would be massively appreciated.