When a uni-body frame is bent or distorted there is a limitation to how much damage can be repaired and have the frame retain at least some of it's initial integrity.
As well, the procedure to actually straighten the frame, from what I understand, is actually a component of the limitation to repair the frame.
Can someone explain the procedure and mechanisms used in the frame straightening process as well as the limitations?
How does a technician that is charged with straightening the frame measure whether or not the frame can be repaired?