Same for the Thai versions. It wasn't til around 1988 or 1989 that the episodes were about 36 minutes each and then finally 30 minutes each in 1997 when the poster/artcover had TVBI written on it. I still have my old VHS collection of some TVB series up to this day. I noticed how the ones from 1991 and before would always cut out the background music when someone talked. It was rather annoying if the background music was really nice too. Sorry, didn't mean to go off topic.