I have got the model engineer series for this model and have set about drawing it in solid works but I cannot find some of the parts that make up the engine. I am looking for the slide shaft bearings drawings but it does not appear in the model engineer series unless it was in a later edition. I have tried to find more details on how the valves work. If there is more detail on the drawings I will look at getting a copy. I will post a model of how I have got later this week.