Other mistake: In some shots of Percy in the water, his boiler is chipped.
Other mistake: When Percy meets Thomas at Elsbridge Station, he has a water line across his boiler, even though the water only came up to his footplate.
Thomas the Tank Engine & Friends (1984)
2 mistakes in Percy's Promise
Starring: Alec Baldwin, Michael Brandon, Ben Small, Martin Sherman, Michael Angelis
Thomas: Wake up lazy bones - do some hard work for a change.
Trivia: The events of this episode were remade in CGI for the 2015 special, The Adventure Begins.
Question: Why was Henry put on a barge instead of being taken to the works?
Answer: He was in the water.