tire squeal around corners when not even turning hard? check the sway bar end links and if the bar its self is broken.
i drove for a month with no sway bar, car felt like a boat and the tires squealed around every turn.
back to the steering, has the wheel always been this firm? or did you replace the rack? magna steer has 3 settings, one finger easy, firm, and extra firm. default settings is firm. to change it you need a tech 2 scanner.