Anti Aliasing Issues

[sonic41592]

Hello, I've been having trouble finding a good filter for anti aliasing a particular NTSC DVD. I've included a sample of two VOBs that show the issue, stairs and intro. I have tried many different AA filters and found that McDAA3 works best for the stairs file, but barely fixes the noticeable aliasing on the intro file (especially the sliding part). However, DAA seems to work very well for the intro file, but blurs the staircase beyond recognition.

Samples:
https://mega.nz/folder/3UgxxY4J#jj2dBaK1wjQN3Zl-V-2S5g

The mkv files were all made using an AVISynth file similar to:

Mpeg2source("intro.d2v")
tfm(d2v="intro.d2v")
tdecimate(mode=1)
DAA

I believe the problem comes from the fact that the staircase has multiple single pixel rows of alternating black and white, which DAA sees as aliasing and tries to fix it. Are there any filters or mods that can properly handle the files? Any help is greatly appreciated, thanks in advance!

[real.finder]

smam(filter=daa3mod(-3))
maa2(mask=-100, maskt=2, ss=3)

[sonic41592]

This works for the intro clip, but unfortunately still blurs the staircase. Here are two pictures from the outputs: https://imgur.com/a/M1kWTSJ

[real.finder]

smam(dslow=-1).slimit_dif(last,thr=20)
maa2()

but it's better to filter the intro alone

[sonic41592]

This does seem to work well on both sections! But yeah, I'll probably end up filtering the intro separately for each episode. It'll be a hassle since the intro starts at different times in each episode and some of the recaps before the intro have aliasing like the intro. Thanks again for your help!