If some of you want to get rid of the rainbowing seen in these transfers I can recommend the fft3dfilter in AviSynth.

fft3dfilter(sigma=3,sigma2=3,sigma3=12,sigma4=3,bt=3,plane=1)
fft3dfilter(sigma=3,sigma2=3,sigma3=12,sigma4=3,bt=3,plane=2)

The above command should be input after the IVTC, the results are quite impressive, especially on starfields but be aware that it also desaturate objects that should have color sometimes. This was a problem I was faced with when doing the Technidisc transfer, so I ultimately dropped it for that one, the side effects are at least minor compared to other filters I have tested, you could maybe apply it just where it's absolutely necessary. Something I plan to do for my 2nd attempt.