Choose either FLAC or WavPack format. You don't need both.

esb_flac.zip .OR. esb_wv.zip

Once again these samples are from 1425-84
The WAV file's left channel contains the LD's analog soundtrack, folded to mono
The WAV's right channel contains LD's digital track folded to mono

I believe they're different mixes. Please listen and tell us what you think.

If it sounds like faulty CX decoding, then I'll have to investigate further. At first glance I don't see how to force CX manually, so I'm trusting that the auto flag is working properly.