So for about a year I was using a cuboid mod and a tfv 4 smok tank without any issue. Suddenly I started getting a very harsh throat hit and not much cloud production. It wasn't like a burnt taste I'd get when I would need to change the coil but I changed it anyway filled it up and had the same issue. So wanting to upgrade anyway I bought a tfv 8 bought a new juice. And again was still gething a bad hit. So I stuck with it for a little and the burning seems to have dissipated and I'm getting good flavor and decent clouds. But now I have a new issue... it seems the wattage will not go above 106 watts. It was doing so on the 4 but not on the 8 ? I know the tank can handle it because my friends all use the same tank. Now typically I don't vape that high anyway but I'd like to go up if I wanted to. On a side note , I noticed the amp reading on the display says 0. I never looked at it before but it seemed strange to me. Shows ohm was .17 which seems correct. Any ideas?