* Add 1 Part 70026a Light Gray Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3 with Shallow Middle Hole (match ID 3)
* Change 1 Part Light Gray 70026b Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3 with Deep Middle Hole {Regular to Alternate} {match ID 0 to 3}
Comments from Submitter:
70026a was produced until the end of 1980.
70026b was produced since early 1981 until the end of 1990.
These were verified based on the production dates that were engraved underneath these parts.