I actually went and cleaned my trackball today. I was working with some thermal grease and it got on my trackball. So I decided to clean the ball the innards that hold it. It’s been a while since I last cleaned it.
So after cleaning it, it was all sticky, like it was still dirty. So I kept cleaning it. And cleaning. And cleaning. And it was still sticky.
Then I searched and found this post.
Using my forehead as lube. Brilliant. I have a lot of that on my face. And voila. My trackball works great again.