I know a guy that was trying to upgrade his bench seats (he also has 45 yd line seats, both lower deck). His brother in law was buying two new seats. When his brother in law got the call, they offered no donation chairbacks. His BIL asked if he could move some other seats next to the new non-donation seatbacks, voila! Now all four seats are non-donation seatbacks. Not sure if he would have been able to move up but for this sequence of events. Only speculating.