I got another 2353 AA set last week and added the two pullman cars to the layout. The single loco wouldn't pull the eight cars, so I cleaned the new 2353P and locked it in reverse. Now I have two double motored A units pulling 8 cars.
Yesterday a freind gave me a newer Lionel Santa Fe Hudson. It's like a 773 with short tender and no added piping. I had four scale length Lionel Pullman cars from a deal earlier this year. They don't have roadnames so they can run with any loco. Makes for a nice set.
Here's a video of them running under the blue lights:
Both sets are running on full power.