My husband and I are buying our first house. The one we like has a problem. The upstairs floor is warped and a few of the door-frames look fun housey. The inspector thinks that this is the result of the removal of a load-bearing wall downstairs when the owners converted the garage to expand the size of the den. The seller had a contractor check it out after the inspection, but apparently, his opinion was that the damage is a result of "settling" and that there were no structural defects. He estimated that it would cost about $8000 for "cosmetic" repairs to the door-frames. He did suggest a structural engineer take a look at it to verify, and we are scheduling an appointment. I am hoping to learn as much as I can about this before the appointment. Are the symptoms I mention ever just cosmetic? Will the house just keep getting more warped as time goes by? What are typical approaches to this problem? Any advice or guidance is greatly appriciated!!!!