I have the Tatula SV-TW103, same system I think, with that "zero adjuster" knob. I didn't realize what that meant when I bought the reel and started monkeying around with it right out of the box. I thought it weird that the tension adjuster was so hard to access but didn't understand why at the time.
At some point I started googling it and got even more confused. I had acquired a Tatula CT shortly after that which, I thought, had the same braking system but didn't have a "zero adjust" knob. I still don't understand why but oh well.
I ended up readjusting it to the best of what I could tell the factory setting must have been, which is a barely perceptible side to side spool wobble, and now I just mess with the brake setting when I need to. Which isn't often, this reel is amazing. Whatever this brake system is (Magforce? Magforce Z? I dunno, again it's very confusing) is as far as I'm concerned the holy grail of brake systems.