I need help with physics of a rolling ball.

So I am working on a project, similar to an infinite runner except it's a ball on rail tracks.

My issue is that the ball keeps bouncing at what seems to be random intervals along with rolling off the tracks at any given point.

It could be that the ball isn't a perfect sphere but here is what I have done:

I tried adding a physical material and setting the bounciness to 0 as per this answered wiki question but nothing.

I have also tried placing a blocking volume over the tracks but it still bounces or rolls off to the side. I can get video of it for Monday but I don't have any material on hand right now.

Can anyone point me in the right direction on how to try and tackle this?

crappy upright phone video is crappy and upright

This actually encompasses everything I'm having an issue with. But I'm most worried about the bouncing.