Thanks guys, i think im starting to understand. To clear things up for the steering (in simpleton terms), if i were to increase expo i would have to sacrifice smoothness for responsiveness right? And if i were to decrease expo i would have to sacrifice responsiveness for smoothness. Something like that?

From how panda described it, it sounds like negative expo "lowers" the input directed to the servo while positive "increases" it. In other words, i see it as neg slowing the servo and positive making it faster (in dummy terms)