Thanks for all the nice comments guys, the engine is breaking in and continues to run better as it loosens up; I will get another video in the future.
Zephryn, this engine is a model of the 4 cylinder marine engine, not the compound; if I understand your question correctly. I have attached a drawing similar to this engine.
The full sized engine is in a museum in Paris if I remember correctly. They also have the compound engine on display.
Dave