Hi guys so i recently bought the kangertech v2 it was chuking vapor like a champ and now its not and hits seem harsher i tried cleaning contacts base standard cleaning losening coil a little bit even change out the coil my 50/50 juice has oxidised and is turning yellow but i dont think that effects vapor production i have all airflow holes open. tried changein drip tip even some stronger 18mg pirate eliquid same situation any suggestions on troubleshooting this more?