Question: How did the wheel get 20 degrees off? Look down at the middle of the rack, there is a hole. Place a pin in the hole and move the steering wheel back and forth until the pin drops into the hole in the rack itself. This is the center or the rack. Is the wheel still 20 degrees off? If so find the center of the frame cross member and from there measure to the tie rod end or the disc rotor. Are both measurements the same? If not correct this, and is the wheel still off. Then measure the toe in. If none of this corrects the problem you may have a bent or broken frame as I did.
Good Luck