I have been charging and
vaping through the USB since my S class. But since reading your post dannyben I have stopped. Such a shame as I really liked just leaving it teathered while I worked. No problem. Best to be safe and nice some of you are warning us just newbies just in case. I have asked YiHI and agree people should shut up and ask YiHi too.
Anyway, I am so happy. All my problems seem to have gove away as my steam tuner spring updates arrived yesterday and I have had some time to play around. I had a mare with them to start with. I threw away all the silver springs for my
kayfun V4s. And the gold ones were too fat. So I could not use them until Steam Tuners told me i don't even need a spring (Doh! you idiot). So, I swapped out the so called updated gold spring and fitted the tuner kit. Oh mama... It acually works on the kayfun V4. My Subtank fainted right there on the spot. And every one of my drip tips screemed "Hurrah!" I sware their mouth holes went wide bore right in front of me. That's how slick my V4s are. No room on the atomizer stand for anything but Kayfun now me thinks. I'm now an official vaper. Let the party begin. But honestly, my V4s are working perfecly with my m class. I am so happy. Now I am a big boy

I do feel a little older too.
One question, do you guys start low temp and then raise it a little? This is the first time I have got through two builds with the same perfect results. I hope my other decks work the same but I can say these guys fixed my V4s. Strange SM have not fixed this as it seems such a simple fix. At least I can deactivate sulk mode at last. Maybe activate smug mode?
I believe it was Croak who advised me on getting the tuners (sorry if it was someone else). Thank you who ever you are. You really helped me stop smoking. No joke! I owe you one ok!!!
Take care all and happy weekend