TIVTC/TFM and low-res frames from DVD source

[SaurusX]

I posted this at videohelp, but I wanted to get another take on it in case the eyes are different on this forum.

In the clip below TFM gives some less than desirable results by providing poor field matches. Looking at the calculated mic metrics it's obvious why the field combo (c,n,p,b,or u) is being chosen, but it's wrong much of the time given the resulting "low-res" artifacts. With an override file I can force a good match, which is correct to the eyes and usually a "c" combo (but not always).

I would prefer not to create a huge override file correcting for these frames by forcing a certain match or replacing the current frame with an identical "good" neighbor. Am I missing a processing step here or is the source just bad all around?

TFM code being used:
TFM(slow=2,pp=7,mode=3,mi=70,cthresh=8, ovr="E:\Old Computer Files\Video Editing Tools\MeGUI_2624_x86\avisynth scripts\TMNT2k3\TMNT_xmas.txt")

Usual override command to force good field combo:
13953 c

EXAMPLE CLIP (https://mega.nz/#!hSoiQBDK!ryxw2AOC5PRXJYmCaQ3fsJRjsz4d84vBdD4q4V3Dt1E)

[SaurusX]

I'm taking another stab at this, so bear with me.

Another problem with this source (the best there is, unfortunately) is that many sequences have frames that are near-duplicates of prior or next frames, except that a single field has been duplicated. The posted example above demonstrates this well. I can manually replace those frames, but ideally I'd like to automate it. The test would be a comparison of the prior and next frames to a frame composed of a duplicated field from the current frame. Both fields would have to be tested, but if it's a match, then the prior or next frame would be replaced with the true current frame.

Now, the real question: How do I do that? I've looked at the filter Dupped_MI here (https://forum.doom9.org/showthread.php?p=1716968#post1716968), but it's not quite what I need. Can anyone help with this? This level of avisynth programming is beyond my ken. Thanks.