Upon closer inspection we found that the YJ had a bad frame twist. There was an upward bend on the passenger side that we had not seen upon purchase. This was less than ideal, but we decided to try and fix it with a bottle jack, some big clamps, and a heavy piece of I-beam. Eventually we cut and plated it back to almost straight. Learn from us: Be sure the frame is good when you buy a donor for a project like this.