Need help interpreting graphs for 400mm V-Core 3.1

This is my first core-xy printer and even after watching the frequently recommended YT on these graphs, I am not sure how to interpret them. From that video, I get the feeling these graphs would suggest some binding on my x-axis. But I cannot feel that binding myself when i turn the motors off. Is there something else i should look at?

radical-limeOP•1/2/24, 3:43 AM

Here is a photo of my toolhead as well in case it is something I am not seeing.

radical-limeOP•1/2/24, 5:29 AM

Ok, adding a lot of tension to the belts gets me here which looks a lot better (I think?)