The MDS 25 is not the most common engine in the world so I wouldn't expect a lot of response.

The MDS engines tend to unload a lot, mixture wise, when in the air and require a little getting used to.

They can be a real enjoyable engine.

The sources for MDS parts are disappearing off the face of the earth.

Due to these factors, I would think the engine would not be one to have a lot of investment in?

Enjoy,

Jim