What if film appears to “jump” or “chatter”?
If the film is not lubricated, some projectors can damage the film perforations. (Kodak film is automatically lubricated during processing by Kodak.) Once the perforations are damaged, lubrication will not solve the problem of unsteadiness. Such damaged areas must then be either spliced out or duplicated. Lubrication also helps prevent drying and warping of the film. For protection and long life, your film should periodically be cleaned and lubricated.