On a recent borescope of the cylinders, saw something on two exhaust valves that looked like a potential leak. Here are the picts of the two to see if anyone has seen this before and if it could even potentially be a leak at this location. The spots are circled in yellow in the picts.
The engine is a Pponk

Looks like a potential leak between the valve seat and the cylinder. I'd try to scope it from the backside to see if any gasses are getting around the seat.