I have one TC that does have power adjustment in TC mode, a Heatvape Invader Mini, but it's my least favorite TC mod and I haven't yet tried any of my 3 titanium coils on it.So on yours you have no power adjustment in TC mode? That might be the diff between TC and Temp Limiting.
Power level is a way to control how fast you reach the temperature limit that you set. With my mods that have only temperature adjustment, that means that the wire is going to reach the set temperature using all available power. I think that's a good way to do it. Later on, I'll put today's titanium coil on the Invader Mini and see what difference it makes to change the power setting at my selected temperature.
Today's titanium coil: I used the wire from 3FVape for the first time. 4 loops, 3mm inside diameter came out to 0.22 ohms. I also drilled 2 holes in my Kanger Subtank chamber with a 5/64" drill bit. It's working beautifully right now at just 230 to 270 degrees F (Nickel 200 mode) on my istick TC40W and on my Koopor 60W, possibly a little better on the Koopor. I'll know within a couple hours whether the extra feed holes have cured the "thin vape" problem that developed with my previous titanium coils.