Damaged Ball Screw

I noticed a thud-thud sound today as I pushed my spindle back along the y axis. After investigating it looks like there is a small nick on ball screw of the left y rail. Is it something I should be concerned about causing issues over time? Do I need to replace it?

Here is a video of the sound: Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.

Here is one showing the small nick moving (I couldn’t get a good picture of it) Microsoft OneDrive - Access files anywhere. Create docs with free Office Online.

Thanks in advance to anyone who is able to help me out!