Great mod but having two problems with this device in TC mode. First problem is that when I press the fire button it sometimes doesn't produce any vape. I have a nickel clapton reading at .07ohms at 450F @70W and randomly when I press the fire button the screen says 800F at .01W. I put the same atty on my opus200 and hanamodz v200 and it works perfectly fine. If anyone has had the same issues and know what the problem is that would be great to know. The next problem is that in TC, the device is not reading the resistance correctly. The same build from above would always ask me if it's a new coil at .15 ohms. While I vape the resistance reading keeps increasing to .10,.13 and .15. I think it's ground issues with the 510 connection. I know it's not my builds bc when I put the same atty on my Opus200 and Hanamodz V200, it reads properly at .07ohm and it never fluctuates. Does anyone else who has a VS DNA200 see that their board was customized in Rhode Island?