I remember ‘Neighbors’. Larry Gelbart wrote the screen play. He was angry that Belushi and Akroyd ad-libbed or rewrote so many of the scenes and wanted his name off the film, which didn’t happen. Belushi and Akroyd were funny in individual scenes but I didn’t think the movie held together, would have been nice to see the film Gelbart envisioned.
Gelbart also, as you know, was the creator and producer of MASH on TV.
Belushi and Aykroyd also had major fights with the film’s director; John Avildsen. They tried to get him fired from the movie