Down home we've got some excellent custom alignment shops where people go when they've had their car lifted or lowered or put special wheels on the car. These people claim to straighten anything and they can. They use "older than time" Hunter Lite-A-Line machine that uses light beams. No computers. They are able to fix problem case cars that the dealers don't have a clue about. High tech equipment is not necessary to solve your problem. Understanding of alignment and geometry is necessary. I'd try to find one of those guys. They may offer additional insight.