If a vehicle wobbles at a certain speed how would the tow bar cause or correct that. What does the tow bar have to do with that? Does the vehicle do it when just being driven? How would pulling a vehicle have an
effect on the steering verses it being pushed by the rear wheels? IF it were mine I would have it aligned by a shop that deals with off road jeeps and big ass lifted trucks. They understand suspensions more than
the guy following figures he is reading from a book. Forget about the dealers, they are going to deny anything is wrong.