I had no idea how to describe it but this is most certainly not meant to happen. I realize the sound of the motors is quite loud in the video.
Here’s a point at which you can 100% hear the rubbing.
I’ve found that a tiny bit of WD-40 sorted the problem and solved a few printing issues I was having too. I’m going to get some lithium grease to lubricate it with in a few days.
Thanks,
Greg