A/V sync problems with Videora

I am having this problem also. In my case, the audio in the mp4 is immediately out of sync and stays that way. I have tried a number of other rippers, thinking maybe it wasn't Videora, but it doesn't seem to be the ripper, because the VOB I created in the first step looks and syncs just fine. I did notice that Videora works on a smaller clip of the same problem movie, so one thing I intend to try is chopping the big problem movie up into, say, thirds, and then reassemble the pieces. I have seen this problem mentioned in the Videora forum as well as elsewhere here. Sampling rates don't seem to make any difference. My latest experiment is to get a working AVI of the full movie out of DVDx and then see what happens in Videora. Any other suggestions warmly welcomed.