Bbs02 high pitched whining help

Month old bbs02 is making a very annoying high pitched whine. It wasn’t like this when it was new. The hotter it gets the worse the whine. Any idea what I need to replace to make it go away? I linked a YouTube video. Please help my searches didn’t help

https://youtu.be/DPucKCHbinU

I'd start with greasing the final drive (right hand side) gears. It's pretty simple to do, and alot of BBS02s seem to come with a pretty stingy factory grease job. MobilGrease28 I think is the name of the stuff most people seem to recommend. Cram a bunch of it in there, it should be quiet for a while. I didn't hear any awful noises that sound like broken parts, just poor lubrication. If anythings broken you should be able to see it when you have the cover off, but it really doesn't sound like it.