the parking brake is adjusted at the rear wheel, remove 1 lug bolt from each rear wheel. shine flash light inside, and turn star wheel until the wheel is locked, back off 10 turns. do the same for the other. i dont know why you want to remove the lever boot, but you can just yank it off, you only ever need to take this boot off when you remove center console, or replacing the cables. there is no adjustment made at the handle for parking brake.