Hello, I have owned an itaste 134 for about 8 months now. Everything's been great with it but lately (regardless of my new, quality batteries) it doesn't want to fire properly or sometimes at all.. It sometimes even makes like a small mechanical whining sound when I'm trying to fire it, regardless of it producing vapor or not. I'm not ready to give up on this mod even tho i just purchased the eleaf istick 40w that comes out this month. Please help me on how i can troubleshoot, repair this or even get it repaired somewhere/somehow. Thank you for your time and concern!!!