I am probably confusing which train is which, but I think the 800 train has the Tall Timbers Cars and the 213 has the ADA lift and seating. The 845 as Mike stated handles the canyon explorers with 930 giving back up to this practice. The 930 is the third added train during the season with a fourth if its needed, added at 730. The 730 tends to be shorter and I don’t believe has been used for many years. Instead, they have used extra cars on the other trains, including double heading.
This is what I recall from times past.
Phil