I have a stock 93 240sx. When I am driving at highway speeds and turn to the right past say 45 degrees the steering seems to shift further to the right and then when I turn back to the left and feels like the steering shifts back? I checked under the car and have not been able to find anything other than the spring on the front passenger side will move if I pull and push hard on it. I tried tightening the strut bolts in the engine bay but the spring still moves. The driver's side spring does not move. CMy struts are old and the springs are original. Has anyone else experienced this? I but do not want to put money just throw parts at this problem so I am hoping someone who reads this has solved this problem. My ball joints on the control arms are decent.