* Delete 1 Part 70026 Light Gray Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3 (Undetermined Type)
* Add 1 Part 70026b Light Gray Electric, Train 12V Remote Control Switch Motor 4 x 8 x 1 2/3 with Deep Middle Hole
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.