the steering trim on the controller makes big adjustments...
the chassis steering alignment is the fine tuning one..
my second one outta the box was bad....
had to bust out the soldering iron.....but at least a got a few shots of the guts i guess.....
i adjusted the chassis aligntment first just by turning the car off then on, and turning the screw.......turn off and on and see if it was visbly closer to center........all this without the controller on, and the car has to have some kinda charge

it doesnt have to be perfectly center yet, but close is good...
then turn the controller on, adjust your controller trim til you drive somewhat straight......and then finally adjust the chassis steering alignment til it drives as perfect as you want