I can assure you that I have connected each wire to the correct binding post.
I can also assure you that I'm not someone who believes in expensive 'snake oil' cables.
Like I originally said, I decided to bi-wire as an experiment. I used the Canare cable because it's a good quality, non-snake oil cable.
I wasn't expecting better sound quality. The cable, to my ears, sounds the same as cheap 14AWG ofc wire. The only difference, to my surprise, was increased sibilance.
I switched back to the regular 14AWG ofc wire and the sibilance was reduced.
I can't explain why. I know some recordings have sibilance. However, it was more pronounced.