How to set Slider Button's Bounding Box to be accurate to Mouse Position?

Hi there, I’ve been running into an issue where the bounding box for the rotary slider button is too large and the mouse is able to drag it from much farther away (in the picture, I denoted the farthest distance I can drag the left most slider from with the red X).


Currently, I’m using Slider::setBounds() to set the position and size of the entire slider, but I can’t find a function that’ll address only the button’s bounds. I was wondering if a function like that existed, or if there were any solutions people know about to fix this.

Thank you!