I build my own coils, and right now I'm using 11-turns of single strand 26ga solid ni-80 wire, which runs between 0.66 and 0.71 ohms, depending on the mod you ask. I went and looked up the TCR value for ni-80, as my wire doesn't tell me, and best info I can find says it's 0.000112 for ni-80. The GeekVape T200 I have only has four digits, no decimal place, and I'm trying to figure out which digits get entered there so I can set it correctly. None of the manuals provide this information, and I don't usually use TCR, so I don't have experience in any patterns of this mods might have. Could anybody offer some insight?