I came in late and didn't read the entire thread, just the last 2 pages.
For me, on Yihi 350x chips, DNA 75/200/250 chips I don't believe I've ever gotten a good TC vape with 316L.
Ni, Ti, SS 430, NiFe52, all great. Tried 316L over time on several mod/tank combos. I've even bought wire from different vendors thinking the wire was to blame.
The 316L always vapes great in power mode but switch to TC and it is anemic.
I could beat myself to death trying to make it work. Or, I could do what I did and move to wire that does work well in TC. For me, that is SS 430 and NiFe52. I kinda had to, my lovely coil assistant has disposed of the 316L.
"Why do you want to try this again?" Um, maybe it'll work on this tank?