So I dug out a full cup of gravel and silt, along with a small foam ball, a penny, and a nail.
After flushing it with water to make sure it was good and clean, it flows great.
It had a threaded plug to block the cleanout, but it wasn’t the right size, and besides the threads in the cast iron are all rusted away. So I filled it with a compression plug. Seems to be working well.
Before:


Yeah the my buddies who looked at it with me told me not to bother with an inspector. So there’s probably song logic to that. But I figured I’d kick myself if I didn’t get an inspection, and then found something dumb later, I’d always wonder if I could’ve known better 🤷♂️
I paid for peace of mind, not that expensive in the grand scheme of things