Factual error: Roberta has a Meet The Brady Bunch record on her desk. The release date for this record was 1972, yet this film is set in the summer of 1970. (00:12:55)
Factual error: Teeny watches Love Story on her roof, in the summer of 1970. However this movie, according to IMDb, was released on the 16th of December 1970. (00:56:50)
Factual error: In the tree house Sam and Teeny are talking about families and mention the Partridge Family. "The Partridge Family" would not debut until September 1970, but the movie is set in the summer of 1970.
Factual error: The poster of solar system photo mosaic shown on wall of Sam's bedroom was not made until the early 1980's.
Factual error: After Crazy Pete saves Sam from the sewer, Sam's hair is stringy and fairly dry. It should have been flat and soaked. (01:07:05)
Factual error: Modern money in the diner, not from when the movie is set. (00:17:45)
Answer: Reshooting certain scenes would most likely necessitate new stunt people, as the first one(s) would most likely be hard to get back.