Well there is something as the last owner mentioned it started not that long ago. In other words it was not there before. Plus you believe you hear something.

I thought that during the first video I did hear something. I am at a loss to identify it though. The engine sounds good in general otherwise.

I think if there were a mechanic in your area that has over the years worked on many of these. I might just get him to listen to it. There is usually nothing better than a person with a lot of experience on an item.

Do you get a clang when shutting down the engine?