Media 100i to DVCPRO to DV to DVD

I know, lots of changes in codecs, but that's my workflow at the moment.

Here is my workflow:

1. Video masters made from Media 100i, mastered on DVCPRO via s-video analog inputs (640x480).
2. Some DVCPRO submasters made from 1", 3/4" or SVHS original masters.

3. DVCPRO analog out to ADVC-100 - convert analog to DV - capture in Premiere 6.5 on a PC.

4. Render MPEG-2 (M2V and WAV) using Premiere's Main Concept utility.

5. Burn to DVD-R using Adobe Encore DVD (I have posted this problem there also).

6. Upon playback on NTSC DVD player (tried both Apex cheapo model and older Samsung unit), any motion produces vertical interlace artifacts (vertical lines, during motion, are showing separate fields. In fact if you freeze frame and step a frame at a time, it looks like interlaced video on a computer monitor.) The more motion, the more interlacing problems.

7. Also, at each cut, there is a flash, as if both fields are being shown separately.

Everyone has suggested changing the filed dominance. We tried rendering some MPEG-2 files with upper field, lower filed, and the same net result is produced.

So I am wondering if this is happening before the video gets into the PC. I just learned that Media 100i uses upper field dominance. While the DVCPRO masters made from the Media 100 look fine upon playback, could that be the problem?

Thanks for any and all advice and comments. I'm out of ideas at the moment.

Mike