I have the #19. Had to replace the tach motor in the A unit. Thanks to Frank Timko (who rebuilt the defective motor from parts I ordered from Lionel) and to Gunrunnerjohn (who published the info needed to order the E6 dummy couplers for close coupling), I now have a great-looking and fine-running ABBA set.
BTW, thicker plastic used in this model. So no light bleed-through from the cab.
Hal