So far I have purchased two vaporizers. The first one was a kangertech 1900 mega. It worked great at first but when I bought new coils it started to work like crap. I bought the 1.8 omh coil which were the enclosed one. It feels like it is clogged when I take a drag. What could be wrong? I also purchased a sigelei 30 watt from. Friend and that worked out good but now getting a burnt taste once in a while with a brand new coil. The coils were purchased at two different places. I have taken the coils out of both of them and blew in them and put them back in. Is that a problem? I have a kangertech mega atomizer on the sigelei. I'm getting sick of kanger and there coils. Thamks for the help