I haven't seen four stem bolts yet, unless you have a stem extender. In that case, you'd have two pairs of pinch bolts with allen heads. My approach would be to loosen the uppermost pair of bolts just enough to allow the stem to turn with slight force. Make the correction and tighten the bolts sufficiently that you can't easily turn the handlebar while gripping the front wheel with your knees. I wouldn't bother with torque wrenches or counting turns.