Sry, didn't get that you already have a wotofo. Then I would assume the problem is not the atomizer, but maybe the mod?

E.g. I have a real eleaf pico and a knockoff chinese one (still having all eleaf logos etc on it ). The genuine pico has a very good TC, but the knockoff a very bad one.

BTW: You can see the difference e.g. between my two picos (genuine vs. knockoff) very easily from the build quality (e.g. the knockoff just has a metalized plastic screw cap for the battery vs. the genuine having a full metal cap).