Keep Circulating the Tapes: There was a VHS and LaserDisc release in 1991 and wouldn't see another home video format until twenty-four years later when it was released through Warner Archives. It didn't help that this already obscure film was rarely screen or aired on TV since it's release, with it's last two broadcasts before the DVD were in 1998 and 2015.
Re Cut: A big reason for the film's disappearance off the face of the earth was co-director John Korty's dissatisfaction with the released cut, which largely deviated from the script with the actors' incessant ad-libbing and included less profanity. As a result, he has threatened legal action to any television station that airs the released version rather than his own personal cut, and most of them have simply decided that it was not worth the trouble.
Throw It In: Most of the dialogue. A majority of the cast were experienced improv comedians.