Let me see if I can explain how a sway bar works....
You would be not be able to tell if its working by looking at it ...The way it works is when lets say you make a left turn the car weight transfer would be on the right of the car making the car wanting to lift the left wheel of the ground now the sway bar would push the left wheel down,the thicker the sway bar the the the harder the wheel pushes down...hope you understand...anyway try by getting a thicker sway bar ....trial and error.