dgindex demuxed .ac3 out of sync with video

not sure if this is my dvd recorder (Panasonic DMR-ES20) or what because i can't seem to find info on this anywhere. basically i recorded a disc on sp speed using the dvd recorder, and it has several so called "titles" or times i pressed stop and then record again later. i don't care about having these as separate files or anything (i'll just use trim() in avisynth scripts later to do that), but the trouble is that the .ac3 file that comes out of dgindex is losing time every time dgindex passes a title break, resulting in a progressively earlier sound track for the .d2v as served through avisynth. just to reiterate, it's synced for the first title, but after that, it loses maybe a few ms every time, and with 20 titles per disc, that adds up to a lot of desync by the final title. i tried using vob2mpg to make a .mpg and the audio was synced in that, just no way i know to get it into avisynth without using dgindex (so back to square one there). thanks.

Did you get one VOB per title on the DVD?

Then you're probably getting discontinuous timestamps at each title. DGIndex does not correct for that. Maybe you can fix it with ProjectX or some other application. Still, 20 titles at a few milliseconds each is only 40 ms, which is not that bad.