This seems like a continual problem of this time period where whatever recording devices tv stations used here meant week to week stuff could actually be recorded over and never kept copies. Sounds like it happened with channel 7's sport like the footy, channel 9 with shows like this and even probably the World Series Cricket that must have had thousands of hours of play from late 70's yet literally only an hours worth of footage of cricket from that period seems to be all that is left. Incredible really.Sad thing is Channel 9 destroyed a lot of the episodes as they had a habit of recording over old film to make way for new shows.