I have had a lot of trouble with the v3 heads as well. I burnt 3 heads in 1 day. So I decided to try rebuilding one. Way better. Got 2 ohms and it vape perfectly. I liked the shorter wicks so I made the wicks short in mine. Main thing to remember if you are going to rebuild them is to get some silver nonresistance wire so you don't get hot legs. Cost me 10 cents to rebuild a head.
NO this is not a pipe bomb!!!!!
NO this is not a pipe bomb!!!!!