Helping a community makerspace that has an old Summa. The Cassette Changer isn't doing it's job entirely properly and cassettes are not always fully returned to their home position. This generates an error message, user can open the door, pull the cassette back into position and resume the print without issue. So they're still using it, but obviously this is very inconvenient. Anyone know if there is a simpler fix for this than replacing the entire changer to the tune of $750 or so? Question for this nonprofit is whether it's worth it or if the printer is just past it's useful life and they'd be better off seeking a full replacement of some kind.