Thanks! I have done TC with both a tank and a dripper before, but it just seemed to flatten out the hit too soon. I'm thrilled enough as it is using regulated power mode so all of my hits are as good as the first. I I only used mechanicals forever until recently getting roped into the MT thread and now, I have 10 tanks. Each one I got seemed to get better than the last. I might give TC another try with these newer tanks and see how it goes. I have a bunch of SS wire in 304, 316L, Clapton and fused Clapton.
Are you using a a device that allows you to manually adjust your TCR for temp control? If so, the TCR for 316L that I've had the best luck with is "0.00092". Some devices, you enter it in a little differently, but that's how you would do it for a DNA200, for example.
Also, with the exception of the Bellus, I cannot get it to work 100% correctly without the RTA/RDA having grub nuts to secure the leads down. Regular screws throw everything off for me. My MT wouldn't cooperate until I bought some grubs for it ($3 on eBay). My temps would fluctuate from 400 degrees all the way up to over 1000 degrees on the screen.
Those 2 issues (Proper TCR and grub nuts/really tight leads) were really the only issues I ever had getting it to work. One other thing I've read a lot is, the higher your resistance, the more accurate it'll behave. I usually shoot for .35 to .4 ohm.