I was copying a dvd that I had recorded at the 1 hour length. The dvd was playing in an old sony, and being recorded on the Philipps 985. The original dvd was slightly less than an hour by a minute or so. The new dvd went over an hour. AInce I set the quality to one hour it did not include the entire material. I tried recording again with another blank disk and the same thing happened. Any ideas?