i copied dark knight with dvdfab (free version) to my harddrive, then used dvd shrink to get it under 4.3gb. then i used copytodvd (latest version, trial) to copy to a dvd with 1x speed. chapter 4-11 were choppy or did not work. what can i do to get better results? i am using a nexxtech dvd+r
looks like all but chapters 4-11 are good.