I've always used Totally Wicked, found them good in all the outlets I've been to and online. They don't baffle you with vape talk just help you with your requirements. Some vape shops are as bad as anal Craft Beer Drinkers.
Sounds like you have cheap equipment. Buy from a good vaping outlet, I've never looked back going from 30 a day straight to vaping. Been fag free for 20 months now and now down to lowest nicotine for last 4 months. Hoping to kick it all together soon but will not risk going back to fags. Smoked...