Take note of what power, in non-TC mode, produces the vape you like most.
Then, when you switch to TC mode, set the power 25 - 30% higher then what you noted before.
Now, check if changing temperature setting functions as it should.
Notably, check the real time changes of resistance; you should verify there is a variation of four hundredths ohms from cold to hot (i.e., 0.15 ohm cold, 0.19 at max temp).
If the change is too dissimilar, you have a problem, either with the tank or the mod, mostly related to dirty / oxydised 510.
Please note some metal oxydations are transparent.
Once you can see the resistance variations, you can start to fine tune by locking the proper cold resistance, and experimenting with TCR coefficient.
I take one unknown out of the equation by using certified resistance wire.
Actually all industrial/hobby sensing wires comes with a datasheet with all the parameters, but not the stuff from China. The only certified wire I have seen in vape shops is the Dicodes NiFethal.
I really believe Evolv, as next step, should come up with an automagic AI routine, so the mod do all of the job instead of user, so everybody can use TC.
Good luck with TC....