engine noise

I pulled up the dip stick so I know that the crank isn't hitting it and I don't have a windage tray

I don't think I have an exhaust leak at the flange or at the collector but I'm wondering if there's a pin hole in one of the tubes.

Here's another video[ame="https://youtu.be/5vChVhCQOjg"]https://youtu.be/5vChVhCQOjg[/ame]